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Western States 100 Pacing Calculator

Grade-adjusted, even-effort pacing splits and a fueling plan for the Western States 100, from Olympic Valley to the Auburn track.

Distance
100.2 mi
161km
Total climb
5483m
official D+
Total descent
6952m
official D−
High / low
2667m
low 213m
1000m2000m
Robinson Flat9:10:00
Last Chance12:25:00
Devil's Thumb14:10:00
Michigan Bluff16:55:00
Foresthill18:45:00
Rucky Chucky (river crossing)24:00:00
Green Gate24:50:00
Auburn Lake Trails26:15:00
Robie Point
Finish (Placer High School)30:00:00
0km50km100km150km161.1km
Your goal
Goal type
:
hrsmin
Pacing strategy
Constant effort start to finish.
Projected finish
24:45:00
Even effort · incl. 45:00 rest
Pace
8:56
avg/km
GAP
8:55
flat-equiv/km
VAM
197m
/hr on climbs
Pacing splits · Even effort
SectionLengthTarget paceVAMVertGAPElapsed
0m–7.2km7.2km16:08/km401m/hr+777m8:55/km1:56:16
7.2km–16.6km9.4km7:00/km—−518m8:55/km3:02:06
16.6km–25.4km8.8km10:30/km119m/hr+183m8:55/km4:34:30
25.4km–38.3km12.9km6:25/km—−899m8:55/km5:57:18
38.3km–48.8km10.5km12:34/km271m/hr+594m8:55/km8:08:53
1Robinson Flat
Arrive8:08:53☀ 1:08 PM
Rest
5min
Leave8:13:53☀ 1:13 PM
Cutoff 9:10:00+1:01:07
48.8km–61.2km12.4km8:05/km—−320m8:55/km9:54:36
61.2km–69.7km8.5km8:34/km—−122m8:55/km11:07:19
2Last Chance
Arrive11:07:19☀ 4:07 PM
Rest
4min
Leave11:11:19☀ 4:11 PM
Cutoff 12:25:00+1:17:41
69.7km–76.9km7.2km8:02/km—−185m8:55/km12:09:31
3Devil's Thumb
Arrive12:09:31☀ 5:09 PM
Rest
4min
Leave12:13:31☀ 5:13 PM
Cutoff 14:10:00+2:00:29
76.9km–85.1km8.2km6:23/km—−547m8:55/km13:05:48
85.1km–89.6km4.5km10:31/km153m/hr+122m8:55/km13:53:34
4Michigan Bluff
Arrive13:53:34☀ 6:53 PM
Rest
6min
Leave13:59:34☀ 6:59 PM
Cutoff 16:55:00+3:01:26
89.6km–99.8km10.1km9:13/km12m/hr+19m8:55/km15:33:02
5Foresthill
Arrive15:33:02☾ 8:33 PM
Rest
10min
Leave15:43:02☾ 8:43 PM
Cutoff 18:45:00+3:11:58
99.8km–117.5km17.7km7:41/km—−537m8:55/km17:59:25
117.5km–125.5km8.0km8:07/km—−151m8:55/km19:04:43
6Rucky Chucky (river crossing)
Arrive19:04:43☾ 12:04 AM +1d
Rest
5min
Leave19:09:43☾ 12:09 AM +1d
Cutoff 24:00:00+4:55:17
125.5km–128.4km2.9km11:13/km223m/hr+121m8:55/km19:42:14
7Green Gate
Arrive19:42:14☾ 12:42 AM +1d
Rest
5min
Leave19:47:14☾ 12:47 AM +1d
Cutoff 24:50:00+5:07:46
128.4km–137.1km8.7km9:00/km——8:55/km21:05:32
8Auburn Lake Trails
Arrive21:05:32☾ 2:05 AM +1d
Rest
4min
Leave21:09:32☾ 2:09 AM +1d
Cutoff 26:15:00+5:09:28
137.1km–144.7km7.6km7:42/km—−214m8:55/km22:08:03
144.7km–155.8km11.1km9:06/km18m/hr+31m8:55/km23:49:10
155.8km–159.2km3.4km10:52/km198m/hr+121m8:55/km24:25:46
9Robie Point
Arrive24:25:46☾ 5:25 AM +1d
Rest
2min
Leave24:27:46☾ 5:27 AM +1d
No cutoff
159.2km–161.1km1.9km9:08/km18m/hr+5m8:55/km24:45:00
10Finish (Placer High School)
Arrive24:45:00☾ 5:44 AM +1d
Rest
0min
Leave24:45:00☾ 5:44 AM +1d
Cutoff 30:00:00+5:15:00

GAP is grade-adjusted pace, the flat-equivalent pace for the effort. On an even-effort plan it stays roughly constant while your actual target pace rises on climbs and falls on descents. Switch to “By terrain” to pace the course by its climbs and descents. The highlighted rows are aid stations: edit your rest with the ± steppers and every arrival, departure and the 45:00 of total stopped time folds into the elapsed clock. The cutoff badge shows your buffer against the official cutoff at arrival. The ☀/☾ is the wall-clock hour from the official 5:00 AM start, so you know when to expect a headlamp.

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