Western States® 100-Mile Endurance Run
Jun 26, 2027Olympic Valley, CA100 mi
40 mi from Lost Sierra Endurance Race, similar trail technicality to Lost Sierra Endurance Race, lottery opens Nov 1
Lost Sierra Endurance Race
Downieville, CaliforniaBad Luck Run Club
- 25K entry
- $100
- Aid stations
- 15
- Days to go
- 274
At a glance
- Date
- Jul 23–24, 2027
- Location
- Downieville, California
- Aid stations
- 15, 6 with crew access
- Registration
- Closes Jul 23, 2027, via ultrasignup.com
Listed from UltraSignup. Checked Oct 18, 2026.
Plan this race for free
15 aid stations are already loaded. Add cutoffs, pacing and the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planAbout this race
A challenging endurance race with multiple distances through the Sierra Buttes region, featuring alpine singletrack trails and significant elevation gain.
Key dates
Registration closes
Jul 23, 2027
Race day
Jul 23, 2027
Pricing
100K
After Dec 31
$275
50K
After Dec 31
$175
25K
After Dec 31
$100
Summit VK+
After Dec 31
$90
Email me updates about Lost Sierra Endurance Race
Registration openings and major changes, like a new date or a cancellation.
Aid stations
15| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
Lavezzola Road (Aid #1) 100K outbound stop. | 5.30 miles | -- | -- | ||
Golden Valley Summit (Aid #2) 100K outbound stop. | 15.20 miles | -- | -- | ||
Lots O Lakes (Aid #3) 100K outbound stop. | 20.10 miles | -- | -- | ||
Smith Lake Trailhead (Aid #4) 100K outbound stop. | 25.60 miles | -- | -- | ||
Plumas-Eureka State Park (Aid #5) 100K turnaround stop. | 29.80 miles | 3:00PM | -- | ||
Smith Lake Trailhead (Aid #4) 100K return stop. | 34.10 miles | 4:40PM | -- | ||
Lots O Lakes (Aid #3) 100K return stop. | 39.50 miles | 6:30PM | -- | ||
Golden Valley Summit (Aid #2) 100K return stop. | 47.00 miles | 8:00PM | -- | ||
Lavezzola Road (Aid #1) 100K return stop. | 54.20 miles | 11:15PM | -- | ||
Smith Lake Trailhead (Aid #4) 50K aid station. | 5.30 miles | -- | -- | ||
Lots O Lakes (Aid #3) 50K aid station. | 11.50 miles | -- | -- | ||
Golden Valley Summit (Aid #2) 50K aid station. | 16.50 miles | -- | -- | ||
Lavezzola Road (Aid #1) 50K aid station; the page identifies Lavezzola Road as the crew access point. | 24.80 miles | -- | -- | ||
Lavezzola Road (Aid #1) 25K aid station. | 4.20 miles | -- | -- | ||
Lavezzola Road (Aid #1) 25K aid station. | 12.00 miles | -- | -- |
Entry transfers
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
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Race planning
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