Idaho Summit Steepness by Tim Worth

There are many resources to help with hiking and climbing destination ideas in Idaho, yet I’ll contribute another based on a key topographic characteristic: Steepness.

Let’s focus on peaks. What qualifies as a steep peak? Looking at maps, photos, and guidebooks usually gives a clue, but with the advent of USGS digitial elevation data we can take this one step further.

An effective method for determining steepness of a summit is to find the average vertical drop in all outward directions, within 100 meters(323 feet) of the summit. The greater the value, the steeper the peak is. This definition isn’t perfect. But it’s simple, effective, objective, and focuses on the terrain nearest the apex. And it can be calculated using digital elevation data from USGS.

One caveat is that using a 100m radius is that large mountains with expansive, steep slopes extending beyond the 100m target area don’t grade out as steep they would otherwise, Diamond Peak way down the list at #492 being a good example.

Below is a listing of the top 500 peaks in Idaho, ranked by steepness at 100m radius. Some are well known statewide, others perhaps known locally, but many others are obscure. Some known technical peaks are high on the list, along with at least as many undocumented peaks which might be technical. Other summits are likely stiff scrambles or hikes. Some of these peaks are not far from pavement, while a few may take days of hiking to reach. And while certain areas have a greater concentration of steep peaks(Sawtooths), all mountainous regions of Idaho are represented.

The peaks without a numeric rating are peaks with less than 300 feet of rise.

Text and Calculations by Tim Worth, tworth87@yahoo.comThe Links for each peak will take you to the Lists of John website. To find the peaks on this site, use the search box. Note, as of yet, not all of the peaks have pages on this site.

Click here for Tim’s map of the 100 steepest Idaho peaks. The Links for each peak will take you to the Lists of John website. To find the peaks on this site, use the search box. Note, as of yet, not all of the peaks have pages on this site.

Rank Avg Degrees at 100m Drop (in feet) Name County Elevation
1 54.24933715 455.61 Warbonnet Peak Boise 10220
51.76242252 416.25 Chimney Rock Boundary 7124
2 51.20796348 408.07 Fishfin Ridge Lemhi 9700
3 50.6572901 400.13 9180 Boise 9180
4 50.01984626 391.17 Rearing Stallion Peak Custer 11300
5 49.95927828 390.33 9980 Boise + Custer 9980
6 49.24507948 380.60 9438 Boise 9438
7 48.73731566 373.85 Elk Peak Boise + Custer 10582
48.52622499 371.08 Handwerk Peak Blaine 10860
8 48.42603811 369.77 10300 Custer 10300
48.35334501 368.83 8820 Lemhi 8820
9 48.32976207 368.52 Tohobit Peak Boise 10046
10 47.90233699 363.03 Old Hyndman Peak Blaine + Custer 11775
11 47.86000587 362.50 El Capitan Blaine 9901
12 47.83191578 362.14 North Raker Boise 9970
13 47.43144048 357.09 10100 Boise 10100
14 47.27189398 355.10 Cabin Creek Peak Custer 9968
15 47.23418053 354.63 8540 Idaho + Ravalli 8540
16 46.84045064 349.78 10260 Boise + Custer 10260
17 46.7297994 348.43 9807 Boise 9807
46.20992487 342.15 10860 Custer 10860
18 45.96402785 339.23 Goat Mountain Blaine + Custer 11913
19 45.95997868 339.18 8523 Idaho + Ravalli 8523
20 45.86884642 338.10 7940 Butte 7940
45.80214306 337.32 9460 Lemhi 9460
45.77096005 336.95 11100 Custer 11100
45.1515378 329.74 Devils Tooth Idaho 7860
21 45.12738096 329.46 Howard Peak Custer 11020
22 45.10297657 329.18 10460 Custer 10460
44.98127288 327.79 9395 Boise 9395
44.95917912 327.53 Finger of Fate Custer 9780
23 44.79466434 325.66 Heyburn Mountain Custer 10220
24 44.7788686 325.48 Regan, Mount Boise 10190
44.52099619 322.56 9711 Boise 9711
25 44.50363858 322.37 10340 Custer 10340
26 44.35581129 320.71 9780 Boise 9780
27 44.17017967 318.63 Grandjean Peak Boise 9180
28 44.12211043 318.10 Twin Sisters Cassia 6838
29 43.80695283 314.62 10340 Custer 10340
30 43.35334622 309.67 9727 Boise + Custer 9727
31 43.29231543 309.01 Thompson Peak Custer 10751
32 43.24166526 308.46 8780 Adams 8780
43.13809382 307.35 Black Tip Idaho + Valley 8292
33 43.07820198 306.70 10597 Custer 10597
34 43.05367001 306.44 9610 Custer 9610
35 43.04348741 306.33 8695 Valley 8695
36 43.00291939 305.90 Blodgett Mountain Idaho + Ravalli 8647
37 42.99116923 305.77 8820 Boise 8820
38 42.99054939 305.76 9847 Custer 9847
39 42.63863964 302.02 9583 Custer 9583
40 42.4003282 299.51 Bell Mountain Lemhi 11612
41 42.27281397 298.17 9540 Lemhi 9540
42 42.16703037 297.07 Nick Peak Valley 9064
43 42.04766105 295.83 He Devil Idaho 9420
44 41.98421971 295.17 11300 Custer 11300
45 41.96643333 294.98 Copperhead Peak Lemhi 10060
46 41.93294698 294.64 8361 Valley 8361
41.85122076 293.79 Wolf Fangs Valley 8740
47 41.84469459 293.73 Silver Dollar Peak Boundary 7181
48 41.82380504 293.51 5548 Lemhi 5548
49 41.80377464 293.30 Phoebe Tip Boundary 6620
50 41.76566026 292.91 2887 Owyhee 2887
51 41.72298716 292.47 Grand Mogul Custer 9733
52 41.7101771 292.34 Big Basin Peak Blaine + Custer 11510
41.70966073 292.34 11500 Custer 11500
41.70597113 292.30 9226 Custer 9226
53 41.65203616 291.75 Lions Head Boundary 7288
54 41.63409672 291.56 8837 Lemhi 8837
55 41.63089955 291.53 10205 Custer 10205
56 41.52663926 290.46 9900 Boise + Custer 9900
41.457507 289.76 6260 Bonner 6260
57 41.38440008 289.01 6612 Idaho 6612
41.35576739 288.72 South Raker Boise 9620
58 41.29441739 288.10 Beaverdam Peak Valley 8652
59 41.25907256 287.74 Cathedral Rock Lemhi 9420
60 41.16925225 286.83 10210 Boise 10210
61 41.16439729 286.78 Snowslide Peak Valley 8522
62 41.12966569 286.43 9082 Boise 9082
63 41.07265672 285.86 9110 Boise 9110
64 41.05289518 285.66 8250 Custer 8250
65 40.98398163 284.97 Squawtip Custer 9046
66 40.93125065 284.44 9980 Boise + Custer 9980
40.86537814 283.78 Chinese Wall Custer 11238
40.79590637 283.08 10940 Custer 10940
67 40.79555129 283.08 10785 Custer 10785
68 40.70266081 282.15 8624 Idaho 8624
69 40.65200107 281.65 9367 Blaine 9367
70 40.57921773 280.92 Sawtooth Peak Valley 8875
71 40.55953256 280.73 9573 Lemhi 9573
40.53741453 280.51 10705 Custer 10705
72 40.53349034 280.47 8613 Custer 8613
73 40.47191905 279.86 Pinnacles, The Valley 9273
74 40.40127907 279.16 8340 Blaine 8340
75 40.37422948 278.90 8744 Valley 8744
76 40.34392433 278.60 9660 Butte 9660
77 40.22850162 277.46 Grave Peak Idaho 8282
78 40.17848208 276.97 8552 Idaho 8552
79 40.1572116 276.76 11100 Custer 11100
80 40.14156177 276.61 Cramer, Mount Boise + Custer 10716
81 40.11860585 276.38 6820 Custer 6820
82 40.10550553 276.26 Hyndman Peak Blaine + Custer 12009
83 40.05102594 275.72 8662 Valley 8662
84 39.97508723 274.98 6740 Valley 6740
85 39.90995794 274.35 10327 Custer 10327
86 39.86546306 273.91 Salzburger Spitzl Blaine + Custer 11620
87 39.76391146 272.93 11202 Custer 11202
88 39.75214497 272.82 9955 Boise + Custer 9955
89 39.69412261 272.25 Boulder Lake Peak Custer 11100
90 39.57711229 271.12 Cobb Peak Blaine 11650
91 39.55851122 270.95 8076 Idaho + Ravalli 8076
92 39.49670237 270.35 10391 Blaine 10391
93 39.35400508 268.98 10940 Custer 10940
94 39.28798911 268.35 Brocky Peak Blaine + Custer 11839
95 39.26862512 268.17 7847 Idaho 7847
96 39.26043495 268.09 8100 Boise 8100
97 39.24326246 267.92 9012 Idaho + Ravalli 9012
98 39.08921668 266.46 9268 Custer 9268
99 39.05607586 266.14 9409 Boise + Custer 9409
100 39.04264905 266.01 Saddle Mountain Idaho 8258
38.99490879 265.56 Eagle Perch Custer 9620
101 38.98373376 265.46 11272 Custer 11272
102 38.97632975 265.38 9740 Lemhi 9740
38.94820634 265.12 6380 Lemhi 6380
103 38.92526099 264.90 9460 Boise + Custer 9460
104 38.92142986 264.87 9627 Boise 9627
105 38.90781383 264.74 Nub, The Clearwater 6924
106 38.82339768 263.94 8314 Idaho + Ravalli 8314
107 38.80514791 263.77 11332 Custer 11332
108 38.79909207 263.71 9211 Boise 9211
109 38.71814398 262.95 WCP 10 Custer 11102
110 38.67366934 262.53 9020 Valley 9020
111 38.62464199 262.07 11516 Custer 11516
112 38.60391153 261.88 Castle Rock Custer 8781
38.50584168 260.96 Negro Brown Hill Benewah 2780
38.49597393 260.87 North Lost River Peak Custer 12020
113 38.46101005 260.54 8820 Custer 8820
114 38.44314168 260.37 Copper Basin Kno Custer 10784
115 38.43997661 260.34 10312 Custer 10312
116 38.41804678 260.14 10579 Custer 10579
117 38.41466162 260.11 8414 Idaho 8414
38.39332243 259.91 Crown Point Blaine 9820
38.39331525 259.91 9100 Boise 9100
118 38.31301818 259.16 Bad Rock Peak Custer 11953
38.27842737 258.84 Castle Rock Boise 5415
119 38.27771542 258.83 9292 Custer 9292
120 38.24222317 258.50 10365 Beaverhead + Lemhi 10365
121 38.23941538 258.48 Calkens Peak Custer 11500
122 38.20149652 258.12 Baron Peak Boise + Custer 10197
123 38.16661855 257.80 Vance Mountain Idaho 8793
124 38.15158635 257.66 8620 Valley 8620
125 38.13283591 257.49 South Glassford Peak Blaine + Custer 11180
126 38.10127048 257.20 9660 Boise 9660
127 38.0855126 257.05 9333 Valley 9333
128 38.08282031 257.03 8415 Idaho + Ravalli 8415
129 38.06581174 256.87 D.O. Lee Peak Custer 11342
130 38.00176397 256.28 10390 Beaverhead + Lemhi 10390
131 37.95143482 255.81 Twin Peaks Boundary 7599
132 37.94731354 255.78 Chimney Peak Idaho 7660
133 37.92751352 255.59 6754 Elmore 6754
134 37.92611992 255.58 9266 Elmore 9266
135 37.85195709 254.90 10860 Beaverhead + Lemhi 10860
136 37.83392059 254.73 9930 Boise 9930
137 37.79266913 254.36 The Riddler Butte 11580
138 37.78408253 254.28 9565 Custer 9565
37.77220058 254.17 Packrat Peak Custer 9700
139 37.7696554 254.14 Buffalo Ridge Custer 9443
140 37.76849893 254.13 9380 Elmore 9380
37.75670349 254.03 8184 Idaho & Ravalli 8184
141 37.72093629 253.70 Blacknose Mountain Boise + Elmore 9802
142 37.65324494 253.08 Horstmann Peak Custer 10470
143 37.63011389 252.87 10408 Custer 10408
37.62320082 252.81 Fitsum Peak Valley 8583
144 37.58867727 252.49 8380 Valley 8380
145 37.57061524 252.33 9940 Beaverhead + Lemhi 9940
146 37.53567633 252.01 7340 Custer 7340
147 37.46477161 251.36 Snowyside Peak Blaine, Custer + Elmore 10651
37.43032249 251.05 9980 Blaine 9980
148 37.40092996 250.78 Fenn Mountain Idaho 8021
149 37.37846999 250.58 9639 Camas + Elmore 9639
37.34133694 250.24 Croseus Peak Custer 10288
150 37.32041313 250.05 11458 Custer 11458
151 37.28814044 249.76 Ogre, The Idaho 9256
152 37.26370079 249.54 3940 Bonner 3940
153 37.24468915 249.37 8407 Valley 8407
154 37.23537965 249.28 Wilson Mountain Lemhi 9580
155 37.23403249 249.27 8921 Custer 8921
156 37.16809204 248.68 9805 Custer 9805
157 37.1613995 248.62 9980 Boise 9980
158 37.12572804 248.30 Fitsum Benchmark Valley 8784
159 37.12485605 248.29 9160 Valley 9160
37.121492 248.26 Schoolmarm Peak Idaho 3571
160 37.11771469 248.22 8162 Valley 8162
161 37.00663041 247.23 7940 Idaho 7940
162 36.99692034 247.14 Williams Peak Custer 10635
36.99501888 247.12 9878 Custer 9878
163 36.97552489 246.95 10488 Custer 10488
164 36.96311893 246.83 Freeman Peak Lemhi 10272
165 36.93176739 246.55 Hunter Peak Idaho 8472
166 36.82592726 245.61 9682 Custer 9682
167 36.80951098 245.46 Watchtower Peak Idaho + Ravalli 8780
168 36.70569559 244.53 8500 Adams 8500
169 36.68271307 244.33 9561 Custer 9561
170 36.66547372 244.18 6921 Boundary 6921
171 36.64242031 243.97 Knapp Benchmark Custer 10012
172 36.62760208 243.84 7689 Cassia 7689
173 36.61983524 243.77 8460 Elmore 8460
174 36.58681623 243.48 9722 Boise 9722
175 36.5425348 243.08 11210 Blaine 11210
176 36.53043995 242.98 9900 Idaho 9900
177 36.50756974 242.77 Square Top Valley 8681
178 36.48867509 242.61 10020 Beaverhead + Lemhi 10020
179 36.48443924 242.57 Standhope Peak Custer 11878
36.46582317 242.40 Goblin, The Idaho 8995
180 36.4600873 242.35 Mount Church Custer 12220
36.44517631 242.22 Rupe Peak Idaho 7651
181 36.4059192 241.87 8785 Idaho + Ravalli 8785
182 36.39821631 241.81 Twin Peaks East Clearwater 5903
183 36.36452967 241.51 8291 Idaho + Ravalli 8291
184 36.30839691 241.01 Angels Perch Custer 11687
185 36.30229808 240.96 8297 Idaho + Ravalli 8297
186 36.25612555 240.55 8808 Valley 8808
187 36.20264436 240.08 8530 Idaho + Ravalli 8530
188 36.14365458 239.56 11781 Custer 11781
189 36.13637741 239.50 9515 Camas + Elmore 9515
190 36.10891387 239.26 11641 Custer 11641
191 36.08981842 239.09 Box, The Blaine + Custer 11305
192 36.06626953 238.89 10718 Custer 10718
193 36.06573126 238.88 9765 Boise 9765
194 36.04228946 238.68 9327 Lemhi 9327
195 36.03732778 238.63 9521 Elmore 9521
196 36.00229386 238.33 10220 Custer 10220
197 35.98164674 238.15 10840 Blaine + Custer 10840
35.97480551 238.09 Suicide Rock Valley 6367
198 35.96825852 238.03 8573 Valley 8573
199 35.95609751 237.92 10182 Custer 10182
200 35.92337087 237.64 Lookout Mountain Boundary 6787
201 35.90380183 237.47 Fin, The Custer 11887
202 35.89926801 237.43 8062 Idaho 8062
35.89880885 237.42 Coyote Rock Boise 6255
35.86435156 237.12 9340 Lemhi 9340
203 35.81896812 236.73 Jacqueline Peak Blaine 11027
204 35.79427543 236.51 8832 Idaho + Ravalli 8832
205 35.63742564 235.15 8702 Boise 8702
206 35.63680309 235.14 7150 Boundary 7150
207 35.61688474 234.97 Far Away Mountain Custer 11930
35.59832784 234.81 Rock Pillar Idaho 7100
208 35.59605504 234.79 8802 Valley 8802
209 35.5829216 234.68 8780 Custer 8780
210 35.55960818 234.48 8479 Idaho 8479
211 35.55255303 234.41 8151 Valley 8151
212 35.48897482 233.86 9820 Lemhi 9820
213 35.44561205 233.49 5140 Idaho 5140
214 35.4440236 233.48 8846 Lemhi 8846
215 35.41962228 233.27 Kellys Thum Clearwater 5460
216 35.41069499 233.19 Castle Peak Custer 11815
217 35.37037313 232.84 Pyramid Peak Boundary 7355
218 35.35795244 232.74 Merriam Lake Peak Custer 11180
219 35.34588177 232.63 10330 Boise 10330
220 35.31445978 232.36 10735 Lemhi 10735
221 35.23236014 231.66 9004 Valley 9004
222 35.22046667 231.55 8674 Custer 8674
35.21892289 231.54 6349 Custer 6349
223 35.19767653 231.36 10857 Custer 10857
224 35.18463537 231.25 The Brow Butte 11005
225 35.1815793 231.22 9743 Lemhi 9743
226 35.10953281 230.60 Sugar Loa Owyhee 6345
227 35.10826908 230.59 4618 Lemhi 4618
228 35.09055457 230.44 7588 Boundary 7588
229 35.07262583 230.29 Monte Verit Boise 10140
230 35.06539804 230.23 7974 Custer 7974
35.02880838 229.91 10180 Boise + Custer 10180
35.02565926 229.89 Silver Mountain Boise 8573
231 35.0237039 229.87 Quartz Ridge Valley 8723
35.01721372 229.81 Sugarloaf Rock Boise 6364
232 35.01347005 229.78 Leatherman Peak Custer 12228
35.01031972 229.76 5021 Lemhi 5021
233 35.00608776 229.72 10256 Custer 10256
234 34.99014947 229.58 Alpine Peak Custer 9861
235 34.98790688 229.56 8213 Idaho + Ravalli 8213
236 34.93482174 229.11 Scotchman Peak Bonner 7009
237 34.90493951 228.86 Wolf Mountain Boise 8876
238 34.90132168 228.83 10446 Blaine + Custer 10446
239 34.87874048 228.64 10375 Custer 10375
240 34.86854091 228.55 Bell Rock Blaine 8660
241 34.86451489 228.51 Lorenzo Peak Blaine + Custer 11260
242 34.84106907 228.31 McGown Peak Custer 9860
243 34.8004054 227.97 Baird, Mount Bonneville 10025
244 34.78616139 227.85 10550 Lemhi 10550
245 34.74627789 227.51 7835 Idaho 7835
246 34.73754386 227.44 8899 Valley 8899
34.71569474 227.25 Idaho County HP Idaho + Ravalli 9439
247 34.6898625 227.03 Wigwams, The Boundary 7093
248 34.67854223 226.94 9380 Custer 9380
249 34.66829667 226.85 10140 Lemhi 10140
250 34.64939577 226.69 9818 Blaine + Camas 9818
34.62863007 226.51 Wild Horse Ridge Idaho 5260
34.6247982 226.48 7345 Valley 7345
251 34.58213396 226.12 9963 Blaine + Elmore 9963
34.56183584 225.95 Turtle Rock Cassia 6401
252 34.56135642 225.95 10375 Lemhi 10375
253 34.53767802 225.75 Hunt Peak Boundary 7058
254 34.53715848 225.74 Trinity Peak Custer 11060
255 34.5134226 225.54 Borah Peak Custer 12662
256 34.44221972 224.94 Devils Thron Idaho 9300
257 34.42698898 224.81 8420 Idaho 8420
258 34.38430629 224.45 6837 Boundary 6837
259 34.34456355 224.12 Scotchman Peak No. 2 Bonner 6989
260 34.33782027 224.06 Miller Peak Custer 8610
261 34.33760022 224.06 10777 Custer 10777
34.3268321 223.97 Pool Kno Idaho 2900
262 34.3170547 223.89 Devils Bedstead East Custer 11865
34.30172635 223.76 Crater Peak Valley 8860
263 34.29792456 223.73 Monument Peak Adams 8940
264 34.29350008 223.69 9470 Camas + Elmore 9470
265 34.28192515 223.59 10589 Blaine 10589
266 34.27585582 223.54 10540 Blaine 10540
267 34.27428671 223.53 White Cap Peak Custer 11899
268 34.23393524 223.19 Perkins Peak Blaine + Custer 11220
34.23157573 223.17 8660 Custer 8660
34.22309638 223.10 8233 Idaho 8233
269 34.21097183 223.00 10442 Custer 10442
270 34.16267066 222.60 Tyler Peak Clark 10740
271 34.16199409 222.59 Patrick Butte Idaho 8841
272 34.13390021 222.36 7541 Valley 7541
273 34.12504202 222.28 Sugar Loa Lemhi 9045
34.12177075 222.25 7860 Valley 7860
274 34.11913514 222.23 9635 Elmore 9635
275 34.11794519 222.22 Kent Peak Idaho 7243
276 34.05882013 221.73 11580 Blaine + Custer 11580
277 34.05812342 221.72 6779 Boundary 6779
278 34.05785705 221.72 9554 Elmore 9554
279 34.04080516 221.58 8605 Valley 8605
280 34.02619802 221.46 Ranger Peak Idaho + Ravalli 8817
281 34.02532069 221.45 7530 Boundary 7530
282 33.99899184 221.23 Little Elk Peak Bonneville 9722
283 33.99268238 221.18 8600 Valley 8600
284 33.99023761 221.16 10749 Custer 10749
285 33.98912322 221.15 Buffalo Hump Idaho 8938
33.96512005 220.95 Chateau Rock Clearwater 5660
286 33.96290645 220.93 9052 Boise 9052
287 33.95635329 220.88 Wild Horse Butte Idaho 5458
33.95193442 220.84 8958 Custer 8958
288 33.91850021 220.56 8379 Valley 8379
289 33.91812395 220.56 Lonesome Lake Peak Custer 11302
33.88583971 220.29 Babel, Tower o Idaho 9220
33.88349303 220.27 7620 Missoula 7620
290 33.86932226 220.15 8565 Valley 8565
291 33.86462523 220.11 8731 Valley 8731
292 33.86329735 220.10 9803 Custer 9803
293 33.8554285 220.04 Ajax Peak Beaverhead + Lemhi 10028
33.84210635 219.93 10316 Custer 10316
294 33.84189846 219.92 Jaggie Benchmark Butte 10772
295 33.82266165 219.76 8380 Valley 8380
33.78298255 219.44 Cathedral Rocks Elmore 5340
296 33.77481258 219.37 9621 Custer 9621
297 33.75404533 219.20 8571 Valley 8571
33.74957842 219.16 Rapid Peak Valley 8264
298 33.74905176 219.15 Browns Peak Elmore 9705
299 33.72426861 218.95 11020 Custer 11020
300 33.70043609 218.75 10286 Butte 10286
301 33.69277494 218.69 8412 Idaho 8412
302 33.68642735 218.64 8546 Idaho + Ravalli 8546
303 33.68339492 218.61 8289 Valley 8289
304 33.66407449 218.45 9939 Custer 9939
305 33.65374864 218.37 10020 Custer 10020
306 33.65294142 218.36 7889 Valley 7889
33.6425802 218.27 Crags, The Idaho 7558
307 33.63280336 218.19 9470 Custer 9470
33.62156563 218.10 10100 Custer 10100
33.60776609 217.99 7718 Idaho 7718
33.60573193 217.97 11100 Custer 11100
308 33.60258073 217.94 Two Point Mountain Camas 10124
309 33.59277026 217.86 9185 Custer 9185
310 33.57440661 217.71 8687 Idaho + Ravalli 8687
33.57303892 217.70 Pyramid Peak Adams 8380
311 33.56140848 217.60 8565 Custer 8565
312 33.52014227 217.26 Pyramid Peak Custer 11628
313 33.50593416 217.15 8225 Blaine 8225
33.48687884 216.99 8020 Idaho & Ravalli 8020
314 33.4832607 216.96 10179 Custer 10179
315 33.47315961 216.88 Twin Imps Idaho 9020
316 33.46819943 216.84 10835 Custer 10835
317 33.45655275 216.74 9163 Lemhi 9163
318 33.44193837 216.62 Roothaan, Mount Boundary 7326
319 33.40940351 216.35 10271 Custer 10271
320 33.38385039 216.14 Gooseberry Peak Custer 11090
321 33.37932386 216.11 Plummer Peak Boise + Elmore 9978
33.37147059 216.04 Salmon Point Idaho 2940
322 33.35366435 215.90 Meridian Peak Custer 10420
323 33.33407402 215.74 9505 Lemhi 9505
324 33.3294063 215.70 10060 Lemhi 10060
325 33.29597662 215.42 Slab Butte Adams + Valley 8225
326 33.27713426 215.27 Bottleneck Peak Boundary 6929
327 33.24733879 215.02 Glens Peak Boise + Elmore 10053
328 33.24170085 214.98 Sacagawea Peak Custer 11936
329 33.23678433 214.94 4020 Idaho 4020
330 33.23067854 214.89 Needles Valley 8294
331 33.22920207 214.88 May Mountain Lemhi 10971
332 33.2076249 214.70 Buckhorn Mountain Valley 8457
333 33.17043182 214.40 Latour Peak Kootenai 6408
334 33.12069113 213.99 4308 Boise 4308
335 33.11573718 213.95 9997 Blaine 9997
336 33.09249165 213.76 10269 Blaine 10269
337 33.08884349 213.73 Ferguson Peak Custer 11509
33.07716138 213.63 Kents Peak Oneida 8541
338 33.06870388 213.57 7774 Idaho 7774
339 33.06861287 213.56 Smith Mountain Bonner 6529
340 33.0608665 213.50 8428 Idaho 8428
341 33.05859619 213.48 4890 Idaho 4890
342 33.05844369 213.48 Glassford Peak Custer 11602
33.05685357 213.47 Bromaghin Peak Blaine 10225
343 33.01967562 213.17 Little Ma Custer 11071
344 33.01251564 213.11 10108 Custer 10108
345 32.99652491 212.98 9305 Elmore 9305
346 32.96709795 212.74 6985 Valley 6985
347 32.95445162 212.64 8660 Adams 8660
348 32.89956897 212.19 Puddin Mountain Lemhi 9684
32.847668 211.77 9151 Custer 9151
349 32.84661006 211.76 8708 Valley 8708
350 32.79582021 211.35 Targhee Peak Fremont 10300
351 32.79367399 211.33 9844 Boise 9844
352 32.79105405 211.31 Nipple Kno Idaho 8505
353 32.78648782 211.27 10730 Custer 10730
32.74704453 210.95 9744 Custer 9744
354 32.72800846 210.80 9525 Blaine + Elmore 9525
355 32.72178607 210.75 Custer Lookout Custer 9753
356 32.71925785 210.73 Profile Peak Valley 8965
357 32.71142394 210.66 7420 Idaho 7420
358 32.67778275 210.39 10660 Blaine + Custer 10660
359 32.64414034 210.12 8156 Idaho 8156
360 32.64266911 210.11 Kent Peak Blaine + Custer 11664
361 32.61440741 209.88 Dickey Peak Custer 11141
362 32.61219674 209.86 8925 Valley 8925
363 32.581561 209.62 Mattingly Peak Elmore 9921
364 32.51530175 209.08 9493 Boise + Elmore 9493
365 32.5132558 209.07 7740 Idaho 7740
366 32.50823169 209.03 Storm Peak Valley 9100
32.49723398 208.94 10180 Butte 10180
367 32.49498837 208.92 9745 Boise + Custer 9745
32.48538799 208.84 Blacktop Mountain Bonner 6505
368 32.47656473 208.77 Bible Back Mountain Custer 9928
369 32.43795891 208.46 Shale Mountain Clearwater + Mineral 7612
32.43620101 208.45 10395 Boise + Custer 10395
370 32.41093696 208.24 9798 Boise + Elmore 9798
371 32.40254688 208.18 9520 Valley 9520
372 32.3586228 207.82 11090 Custer 11090
373 32.34834618 207.74 WCP 9 Custer 11263
374 32.33992045 207.67 8122 Valley 8122
375 32.33197765 207.61 8199 Valley 8199
376 32.32040715 207.52 Rocky Peak Idaho 7660
377 32.30180776 207.37 6927 Boundary 6927
378 32.29920862 207.35 Mahoney Butte Blaine 7904
379 32.25696143 207.01 9338 Custer 9338
32.24337795 206.90 Castle Peak Custer 10957
380 32.22594086 206.76 She Devil Idaho 9420
381 32.20744488 206.61 8601 Idaho + Ravalli 8601
382 32.20222057 206.57 Temple Mountain Boundary 6815
32.18338308 206.42 4540 Owyhee 4540
383 32.17568878 206.36 8540 Valley 8540
384 32.16459443 206.27 Harrison Peak Boundary 7292
385 32.14391048 206.10 11909 Custer 11909
32.1427908 206.10 10111 Custer 10111
386 32.13500933 206.03 10700 Custer 10700
387 32.12572927 205.96 McGuire, Mount Lemhi 10082
388 32.11528234 205.88 Mount Corruption Custer 11857
32.09673749 205.73 3195 Bonner 3195
389 32.09445466 205.71 8270 Valley 8270
390 32.03492849 205.24 8780 Valley 8780
391 32.03349197 205.22 Ryan Peak Custer 11714
392 32.00739728 205.02 7300 I Custer 7300
393 31.99462313 204.91 8008 Idaho 8008
394 31.98882934 204.87 8628 Idaho + Ravalli 8628
31.97816898 204.78 Rock Point Idaho 7178
31.96011581 204.64 Eagles Nest Lemhi 4850
395 31.94070087 204.49 8048 Idaho 8048
396 31.93515493 204.44 10042 Beaverhead + Lemhi 10042
397 31.93003444 204.40 10460 Custer 10460
398 31.92167947 204.33 10059 Boise + Custer 10059
399 31.91815312 204.31 Mount Idaho Custer 12065
31.90344493 204.19 Little Sheep Peak Adams 4631
400 31.89948393 204.16 9449 Bonneville 9449
31.87783141 203.99 8940 Boise + Custer 8940
401 31.86695502 203.90 9188 Custer 9188
31.84546305 203.73 9940 Custer 9940
402 31.80794788 203.43 Two Point Peak Valley 9426
403 31.78757905 203.27 Breitenbach, Mount Custer 12140
31.76883012 203.12 No Regret Peak Custer 11972
404 31.74779121 202.96 9340 Lemhi 9340
31.74177535 202.91 Belial, Mount Idaho 8900
31.73604836 202.86 10700 Custer 10700
405 31.73107744 202.82 8754 Valley 8754
406 31.71351544 202.68 6980 Lemhi 6980
407 31.70796053 202.64 9101 Lemhi 9101
408 31.69015225 202.50 Duncan Ridge Blaine + Custer 11755
409 31.67517545 202.38 10334 Blaine 10334
410 31.62159213 201.96 10212 Custer 10212
31.61829948 201.93 8556 Lemhi 8556
411 31.61684802 201.92 Nicholson Peak Butte 11060
412 31.58904802 201.70 Red Peak Benchmark Valley 9571
413 31.57839899 201.62 Pyramid Mountain Idaho 8780
31.57357441 201.58 Big Soldier Mountain Custer 8980
414 31.5699839 201.55 10680 Blaine 10680
415 31.55088089 201.40 Eighteenmile Peak Beaverhead + Lemhi 11125
416 31.54315224 201.34 9361 Custer 9361
417 31.53839017 201.30 9934 Custer 9934
418 31.53259519 201.26 Needle Peak Shoshone 6660
419 31.52509877 201.20 5881 Idaho 5881
31.51400645 201.11 9180 Lemhi 9180
420 31.50122933 201.01 Lookout Mountain Custer 9954
421 31.49537059 200.96 Shefoot Mountain Shoshone 6380
422 31.47843111 200.83 9694 Elmore 9694
423 31.47309688 200.79 Merriam Peak Custer 10920
424 31.47130631 200.77 11087 Blaine 11087
425 31.47014043 200.76 9524 Custer 9524
426 31.44916421 200.60 Alcyon Peak Custer 11220
427 31.4363341 200.50 7688 Idaho 7688
428 31.43441222 200.48 6514 Idaho 6514
429 31.43250998 200.47 Eleven Miles Benchmark Custer 9434
430 31.42716485 200.43 Battleaxe Mountain Valley 9240
31.42709594 200.43 Vinegar Hill Valley 6020
431 31.40949624 200.29 6690 Boundary 6690
432 31.40805157 200.28 6921 Lemhi 6921
31.40572579 200.26 Squaw 2 Butte 10780
433 31.38449174 200.09 Cuneo Point Idaho 8285
434 31.37207542 199.99 8651 Valley 8651
435 31.36782281 199.96 10650 Blaine + Custer 10650
436 31.36119176 199.91 11509 Custer 11509
31.36009511 199.90 Elephant Butte Owyhee 3163
437 31.34417897 199.77 Roman Nos Boundary 7260
438 31.32979595 199.66 Eagle Rock Idaho 5026
439 31.31792948 199.57 Devils Bedstead, The Blaine + Custer 11051
440 31.30552476 199.47 Decker Peak Custer 10704
441 31.30318354 199.45 10557 Custer 10557
442 31.30061461 199.43 9233 Lemhi 9233
443 31.2880182 199.33 10161 Blaine 10161
444 31.28089968 199.28 Gold Fork Rock Valley 8166
445 31.27380887 199.22 6924 Clearwater 6924
446 31.26759166 199.17 East Peak Idaho 7852
447 31.26573532 199.16 8740 Idaho 8740
448 31.26467443 199.15 8340 I Valley 8340
449 31.26009012 199.11 8900 Custer 8900
450 31.24796033 199.02 9036 Elmore 9036
451 31.24750532 199.02 8340 Idaho 8340
31.24176615 198.97 Squaw 1 Butte 10784
452 31.23370373 198.91 8284 Idaho 8284
453 31.22794413 198.86 Everly, Mount Boise + Elmore 9852
454 31.20957553 198.72 Shoshone John Peak Butte 11212
455 31.19528544 198.61 9909 Lemhi 9909
31.19177538 198.58 Camas County HP Camas 10380
456 31.16974941 198.41 Pinchot Mountain Boise 9502
457 31.15982147 198.33 9758 Custer 9758
458 31.15415091 198.29 Snow Peak Shoshone 6760
459 31.1518073 198.27 6232 Custer 6232
460 31.13424803 198.13 7303 Boundary 7303
31.10948605 197.94 9100 Elmore 9100
461 31.10493911 197.90 9472 Elmore 9472
31.10299171 197.89 8232 Idaho + Ravalli 8232
462 31.07927231 197.70 6483 Blaine 6483
31.07499088 197.67 Mains Ridge Custer 8584
463 31.07476837 197.67 10300 Custer 10300
31.04684735 197.45 Prospect Ridge Idaho 5800
464 31.04014392 197.40 Cabin Mountain Custer 11244
465 31.03529114 197.36 Stack Rock Boise 5895
466 31.03273266 197.34 Sheep Mountain Custer 9192
467 31.00398874 197.11 9709 Custer 9709
468 30.9943504 197.04 Waugh Mountain Idaho + Lemhi 8887
469 30.9917979 197.02 10243 Blaine + Custer 10243
30.9802969 196.93 Arange Peak Fremont 8984
30.9706385 196.85 Battle Creek Ridge Idaho 7660
470 30.96249512 196.79 Shelly Mountain Custer 11278
471 30.95993245 196.77 Hard Butte Idaho 8659
472 30.93348525 196.56 9183 Lemhi 9183
473 30.91483143 196.42 Temple Peak Teton 8219
474 30.91366864 196.41 8029 Idaho 8029
475 30.89268856 196.25 8907 Custer 8907
476 30.89227116 196.24 10941 Blaine + Custer 10941
477 30.89214822 196.24 10995 Custer 10995
478 30.8612516 196.00 Twin Peaks Bonner 6264
479 30.8610271 196.00 Edaho Mountain Boise + Elmore 9614
480 30.84908894 195.91 7445 Boundary 7445
481 30.84467807 195.87 8645 Custer 8645
482 30.83609451 195.81 10450 Blaine + Custer 10450
30.83326561 195.79 9940 Lemhi 9940
483 30.8285102 195.75 Blackman Peak Custer 10300
484 30.82197729 195.70 8386 Valley 8386
485 30.78296113 195.40 6742 Boundary 6742
486 30.78044801 195.38 8724 Valley 8724
487 30.7779099 195.36 Diamond Ridge Valley 8618
488 30.77634325 195.34 5463 Clearwater 5463
489 30.77190003 195.31 10441 Blaine 10441
490 30.76416558 195.25 Macks Peak Boise 4960
491 30.76083767 195.22 Altair Peak Custer 11825
492 30.70591665 194.80 Diamond Peak Butte 12197
493 30.69661719 194.73 Bruin Mountain Idaho 8767
494 30.67468395 194.56 7183 Custer 7183
495 30.67277079 194.54 8164 Idaho + Ravalli 8164
496 30.66120143 194.45 8145 Blaine 8145
497 30.65140341 194.38 Smoky Peak Elmore 9294
498 30.64180564 194.30 10514 Custer 10514
499 30.63362503 194.24 6910 Blaine 6910
500 30.62875438 194.20 Watson Peak Custer 10453

About the Contributor

Tim Worth has provided this article on Idaho Summit Steepness. He does a bit of backpacking and technical climbing but enjoys peak ascents the most, having been up over 1500 summits throughout the Rocky Mountain states. Residing in Ft Collins, CO, most of his activity is in Wyoming and Colorado, although he sees Idaho’s mountains as very intriguing and hopes to make more visits in the coming years.
More steepness data for ID summits can be found at the following link: ID Steepness Data