SUMMITSTEEPNESS
RankAvg at 800m Drop (in feet)NameCountyElevation
1 32.67364358 1682.87 Diamond Peak A Butte 12197
2 32.18565407 1651.50 Mount Church Custer 12220
3 32.16323843 1650.07 Castle Peak A Custer 11815
4 31.95049807 1636.51 Leatherman Peak Custer 12228
5 31.72432161 1622.15 Devils Bedstead East Custer 11865
6 31.12655977 1584.56 Copperhead Peak Lemhi 10060
7 31.03947977 1579.12 Mount Idaho Custer 12065
8 30.79491163 1563.90 Horstmann Peak Custer 10470
9 30.75862282 1561.65 Mount Corruption Custer 11857
10 30.73763066 1560.35 Bell Mountain A Lemhi 11612
11 30.44342914 1542.17 Grandjean Peak Boise 9180
12 30.39859792 1539.41 Ferguson Peak Custer 11509
13 30.29658104 1533.13 Cobb Peak Blaine 11650
14 30.18698209 1526.41 Borah Peak Custer 12662
15 30.14601523 1523.90 Heyburn Mountain Custer 10220
16 30.12989806 1522.91 Merriam Peak Custer 10920
17 30.06038217 1518.66 8100 E Boise 8100
18 29.952913 1512.09 Freeman Peak A Lemhi 10272
19 29.84137544 1505.30 6740 D Valley 6740
20 29.77912925 1501.51 Tohobit Peak Boise 10046
21 29.74368526 1499.36 10940 A Custer 10940
22 29.64805755 1493.55 Regan, Mount Boise 10190
23 29.30446722 1472.79 White Cap Peak Custer 11899
24 29.20986046 1467.10 Old Hyndman Peak Blaine + Custer 11775
25 29.1877855 1465.77 5140 Idaho 5140
29.1404601 1462.93 Shadow Lake Peak Custer 11401
26 29.11804524 1461.58 Hyndman Peak Blaine + Custer 12009
27 28.93337467 1450.52 Mogg Mountain Lemhi 10573
28 28.73153083 1438.48 Parks Peak A Blaine + Custer 10208
29 28.64858616 1433.54 May Mountain Lemhi 10971
30 28.54801935 1427.56 Breitenbach, Mount Custer 12140
31 28.51510177 1425.61 10263 Lemhi 10263
32 28.45983804 1422.34 Everly, Mount Boise + Elmore 9852
33 28.32180901 1414.17 8540 Idaho + Ravalli 8540
34 28.29389306 1412.52 The Riddler Butte 11580
35 28.24378876 1409.56 11300 Custer 11300
36 28.23817118 1409.23 9900 A Boise + Custer 9900
37 28.20187237 1407.09 McCaleb, Mount Custer 11682
38 28.09073717 1400.54 9635 Elmore 9635
39 27.93798539 1391.56 Warbonnet Peak Boise 10220
40 27.78840603 1382.80 Grand Mogul Custer 9733
41 27.71524724 1378.52 Williams Peak A Custer 10635
42 27.65959784 1375.27 Howard Peak Custer 11020
43 27.49857436 1365.88 9180 Boise 9180
44 27.44810041 1362.95 10850 Custer 10850
45 27.43688947 1362.30 10391 Blaine 10391
46 27.36270811 1357.99 10680 Blaine 10680
47 27.30578799 1354.68 11020 Custer 11020
48 27.30421097 1354.59 North Twin Butte 11081
49 27.23124506 1350.36 McGown Peak Custer 9860
50 27.12010798 1343.93 Bad Rock Peak Custer 11953
51 27.11246796 1343.49 Kent Peak A Blaine + Custer 11664
52 27.05294023 1340.05 The Brow Butte 11005
53 27.04612014 1339.66 Merriam Lake Peak Custer 11180
54 27.04538833 1339.61 9367 A Blaine 9367
55 27.00594565 1337.34 11260 Custer 11260
56 27.00570968 1337.32 Far Away Mountain Custer 11930
57 26.92485118 1332.66 Snowy Top Boundary 7572
58 26.88136008 1330.16 Little Diamond Peak Butte 11272
59 26.86826662 1329.40 Pegasus Peak Custer 11736
26.84157854 1327.87 8184 Idaho & Ravalli 8184
60 26.82163872 1326.72 Aggipah Mountain Lemhi 9920
61 26.79121282 1324.97 Donaldson Peak Custer 12023
62 26.72528859 1321.19 Sacagawea Peak Custer 11936
63 26.58223257 1312.98 Hunter Peak Idaho 8472
64 26.58003921 1312.86 8479 Idaho 8479
65 26.56326511 1311.90 6631 Lemhi 6631
66 26.56055235 1311.74 Devils Bedstead, The Blaine + Custer 11051
67 26.53494776 1310.28 10759 Butte 10759
68 26.53483878 1310.27 Pavlos Peak Custer 11109
69 26.52179435 1309.52 11100 A Custer 11100
26.50841124 1308.76 North Lost River Peak Custer 12020
70 26.49934827 1308.24 10588 Custer 10588
71 26.49130252 1307.78 10740 A Custer 10740
72 26.47819352 1307.03 Goat Mountain B Lemhi 9607
73 26.44484287 1305.13 Twin Peaks East C Clearwater 5903
74 26.44230177 1304.98 11909 Custer 11909
75 26.44112192 1304.91 11272 Custer 11272
76 26.42042543 1303.73 10858 Butte 10858
77 26.39903678 1302.51 9980 E Boise + Custer 9980
78 26.39154281 1302.08 10705 B Custer 10705
79 26.38117618 1301.49 Fenn Mountain Idaho 8021
80 26.35397954 1299.94 Al West Peak Custer 11310
81 26.35328141 1299.90 10045 Butte 10045
82 26.33820666 1299.04 Snowyside Peak Blaine, Custer + Elmore 10651
83 26.30917613 1297.38 Monument Peak Beaverhead + Lemhi 10323
26.28520291 1296.02 10860 B Custer 10860
84 26.26917215 1295.11 9330 Custer 9330
85 26.26357929 1294.79 6403 Elmore 6403
86 26.24433813 1293.69 10210 Boise 10210
87 26.24133167 1293.52 10365 Beaverhead + Lemhi 10365
88 26.18521583 1290.33 8314 Idaho + Ravalli 8314
26.11656344 1286.43 Idaho County HP Idaho + Ravalli 9439
89 26.05843931 1283.12 South Twin Butte 11070
90 26.05359157 1282.85 9082 Boise 9082
91 26.04266089 1282.23 10390 Beaverhead + Lemhi 10390
92 26.0393148 1282.04 Goat Mountain Blaine + Custer 11913
26.02846402 1281.42 8820 D Lemhi 8820
93 26.02813176 1281.41 10713 B Lemhi 10713
94 26.01481626 1280.65 6120 Valley 6120
95 26.00416008 1280.05 11477 Custer 11477
96 25.9895192 1279.22 Mountaineer Peak Custer 11828
97 25.98366443 1278.88 McGuire, Mount Lemhi 10082
98 25.97377046 1278.32 Calkens Peak Custer 11500
99 25.97165028 1278.20 Elk Peak Boise + Custer 10582
100 25.96442812 1277.79 8409 Valley 8409
101 25.95472837 1277.24 10820 A Custer 10820
102 25.91652459 1275.08 11202 Custer 11202
103 25.8983015 1274.05 8624 A Idaho 8624
104 25.89246686 1273.72 8062 B Idaho 8062
105 25.81965477 1269.60 4444 Idaho 4444
106 25.74900301 1265.61 8523 Idaho + Ravalli 8523
107 25.71165432 1263.50 Trinity Peak Custer 11060
108 25.69997027 1262.84 7889 Valley 7889
109 25.66096414 1260.64 Jacqueline Peak Blaine 11027
110 25.64280297 1259.62 Negro Peak Lemhi 10580
111 25.62498443 1258.62 8540 E Valley 8540
112 25.60561354 1257.53 Triple Peak Custer 11300
113 25.59029358 1256.66 Shelly Mountain Custer 11278
114 25.58832551 1256.55 Perkins Peak Blaine + Custer 11220
115 25.5797439 1256.07 Meadow Peak Custer 9099
25.52578521 1253.03 North Borah Peak Custer 12247
116 25.5229146 1252.87 Glassford Peak Custer 11602
117 25.51390747 1252.37 11967 Custer 11967
118 25.5081752 1252.04 5844 Idaho 5844
119 25.4936185 1251.23 8628 Idaho + Ravalli 8628
120 25.49193138 1251.13 Saddle Mountain A Butte 10810
121 25.48672534 1250.84 9930 Boise 9930
122 25.48183993 1250.56 Butzien Butte Idaho 6086
123 25.43898568 1248.16 Portland Mountain Lemhi 10820
124 25.4248665 1247.36 8460 D Elmore 8460
125 25.41927586 1247.05 8901 Boise 8901
126 25.41822244 1246.99 10079 Custer 10079
127 25.39099259 1245.46 Divide Number Three Idaho 8417
128 25.39098142 1245.46 Standhope Peak Custer 11878
129 25.31190079 1241.03 Twin Peaks South A Custer + Lemhi 10340
130 25.29311862 1239.97 McCaleb Benchmark Custer 11982
131 25.29162489 1239.89 9266 Elmore 9266
132 25.2851804 1239.53 Sawtooth Peak A Valley 8875
133 25.284186 1239.47 9956 Blaine 9956
134 25.27116037 1238.74 Mattingly Peak Elmore 9921
135 25.2574056 1237.97 10749 Custer 10749
136 25.2132282 1235.50 7890 Idaho 7890
137 25.20262198 1234.91 9470 B Camas + Elmore 9470
138 25.1852542 1233.94 10777 Custer 10777
139 25.18434329 1233.88 Scorpion Mountain Blaine 10545
140 25.17221337 1233.21 Lem Peak Lemhi 10985
141 25.15392388 1232.18 Brocky Peak Blaine + Custer 11839
142 25.14896002 1231.91 Boulder Peak Blaine 10882
143 25.10941495 1229.70 Cabin Creek Peak Custer 9968
144 25.10770192 1229.60 Copper Basin Knob Custer 10784
145 25.04549866 1226.13 Salzburger Spitzl Blaine + Custer 11620
146 25.03447147 1225.51 Mill Mountain Lemhi 10793
147 25.02319646 1224.88 Grays Peak A Blaine 10563
148 25.02002375 1224.71 Ryan Peak A Custer 11714
149 25.00362483 1223.79 Big Black Dome Custer 11353
150 24.95876916 1221.29 8832 Idaho + Ravalli 8832
151 24.94029182 1220.26 8695 Valley 8695
152 24.89365704 1217.67 8415 Idaho + Ravalli 8415
153 24.88895362 1217.41 10613 Custer 10613
24.87042361 1216.37 7718 Idaho 7718
154 24.85935681 1215.76 10375 A Lemhi 10375
155 24.80728946 1212.86 South Loon Mountain Valley 9287
156 24.79943672 1212.43 Big Boy Peak Butte 11402
157 24.78849053 1211.82 9820 B Custer 9820
158 24.78793192 1211.79 10488 Custer 10488
159 24.78778843 1211.78 10970 Butte 10970
160 24.78658832 1211.71 Sheep Mountain B Lemhi 10865
161 24.77749587 1211.21 10730 Custer 10730
162 24.77504668 1211.07 8414 Idaho 8414
163 24.76112874 1210.30 Gooseberry Peak Custer 11090
164 24.74702752 1209.52 Scott Peak Lemhi 11393
165 24.73156849 1208.66 Angels Perch Custer 11687
166 24.66909877 1205.19 Massacre Mountain Custer 10924
167 24.65596125 1204.46 9211 B Boise 9211
168 24.63581781 1203.35 9466 A Valley 9466
169 24.63087551 1203.07 Echols Mountain Adams 8331
170 24.62679739 1202.85 Red Ridge B Valley 9320
171 24.58868518 1200.73 Van Horn Peak Custer 9616
172 24.58227563 1200.38 7126 Adams 7126
173 24.57430754 1199.94 11210 Blaine 11210
174 24.56183026 1199.25 Fin, The Custer 11887
175 24.52201835 1197.04 Nicholson Peak Butte 11060
176 24.52055019 1196.96 8515 Valley 8515
177 24.50785167 1196.26 7974 Custer 7974
178 24.4920928 1195.39 9807 Boise 9807
179 24.45810876 1193.51 Alpine Peak Custer 9861
180 24.41600661 1191.18 Bruin Mountain Idaho 8767
181 24.4125986 1190.99 10954 Butte 10954
182 24.39206605 1189.86 Box, The Blaine + Custer 11305
183 24.39007677 1189.75 9934 Custer 9934
184 24.38470415 1189.45 9671 Custer 9671
185 24.36585017 1188.41 Ross Peak Custer 11724
186 24.35225658 1187.66 Braxon Peak Boise + Custer 10353
187 24.34509526 1187.27 9785 B Lemhi 9785
188 24.34151064 1187.07 Flatiron Mountain A Lemhi 11019
189 24.32816801 1186.33 10466 Lemhi 10466
190 24.32077859 1185.93 Scotchman Peak Bonner 7009
191 24.30898106 1185.28 8289 Valley 8289
192 24.29590966 1184.56 7042 C Valley 7042
193 24.29570524 1184.54 11189 Custer 11189
194 24.29434319 1184.47 8605 C Valley 8605
195 24.29231043 1184.36 9988 Custer 9988
196 24.28335807 1183.86 9162 B Camas 9162
197 24.27462313 1183.38 Griswold Peak Custer 11057
198 24.26941769 1183.10 Ajax Peak Beaverhead + Lemhi 10028
199 24.26626544 1182.92 Eighteenmile Peak Beaverhead + Lemhi 11125
200 24.26549208 1182.88 9531 Custer 9531