Western States® 100-Mile Endurance Run
Jun 26, 2027Olympic Valley, CA100 mi
Also 100 miles, similar trail technicality to Sonoma Fall Classic, lottery opens Nov 1
At a glance
- Last held
- Oct 17, 2026
- Next edition
- 2027 date not announced. Usually held in October.
- Location
- Healdsburg, California
- Distances
- 100 mi, 50 mi, Marathon
- Elevation gain
- 25,058 ft
- Aid stations
- 21, 13 with crew access
Listed from UltraSignup. Checked Oct 17, 2026.
Plan this race for free
21 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
The inaugural Sonoma Fall Classic is a trail running festival at Lake Sonoma, California, featuring a 100 Mile, 50 Mile, Trail Marathon, and relay options, presented by Aravaipa Running in partnership with Healdsburg Running Company and Tropical John Medinger. The event offers miles of singletrack with majestic views of Lake Sonoma in wine country during harvest season.
Key dates
Registration opens
Jan 1, 2026
Early (until 3/31) ends
Mar 31, 2026
Mid (until 8/31) ends
Aug 31, 2026
Registration closes
Oct 12, 2026
Late (until 10/12) ends
Oct 12, 2026
Race day
Oct 17, 2026
Pricing
100 Mile
Race Week
$465
100 Mile Relay
Race Week
$440
50 Mile Relay
Race Week
$340
50 Mile
Race Week
$255
Marathon
Race Week
$190
Email me updates about Sonoma Fall Classic
Registration openings and major changes, like a new date or a cancellation.
Aid stations
21| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
Start/Finish 100 Mile start. Water only to Pritchett Peaks (5.8 mi), full aid at 11.6 mi. | 0.00 miles | 5:00 AM | -- | ||
Pritchett Peaks Water only station. Closed 364 days a year, open exclusively for race day. Asterisk indicates water/limited aid only. | 5.80 miles | -- | -- | ||
Start/Finish (Lap 1 return) Full aid station at mile 11.6 on the 100 Mile course. | 11.60 miles | -- | -- | ||
Island View 100 Mile course aid station. | 17.75 miles | -- | -- | ||
Warm Springs Water only to Wulfow (5.4 mi), full aid at 8.4 mi. Accessible via 16-mile scenic country road with a washout near the end. | 25.16 miles | -- | -- | ||
Wulfow Water/limited aid only station on 100 Mile course. | 30.63 miles | -- | -- | ||
Liberty Glen 100 Mile course aid station. Located ~0.7 miles past Lone Rock on Rockpile Road. | 33.60 miles | -- | -- | ||
Lone Rock Water only to next (4.1 mi), full aid at 8.25 mi. Located 1.7 miles from Visitors Center then 2.5 miles on Rockpile Road. | 38.00 miles | -- | -- | ||
Falcon's Nest Turnaround point on the 100 Mile course. Water/limited aid only. | 42.20 miles | -- | -- | ||
Lone Rock 2 Second pass through Lone Rock on the 100 Mile course. | 46.25 miles | -- | -- | ||
Start/Finish (Lap 1 end / Lap 2 start) End of Lap 1 / Start of Lap 2 for 100 Mile. Cutoff is 17 hours (10:00 PM). Water only to Pritchett Peaks (5.8 mi), full aid at 11.6 mi. | 50.25 miles | 10:00 PM | -- | ||
Pritchett Peaks (Lap 2) Second pass through Pritchett Peaks on Lap 2 of the 100 Mile. | 56.05 miles | -- | -- | ||
Start/Finish (Lap 2 mid) Cutoff is 21:15 hours (2:15 AM). Full aid station. | 61.85 miles | 2:15 AM | -- | ||
Island View (Lap 2) Second pass through Island View on Lap 2 of the 100 Mile. | 68.00 miles | -- | -- | ||
Warm Springs (Lap 2) Cutoff is 26 hours (7:00 AM). Water only to Wulfow (5.4 mi), full aid at 8.4 mi. | 75.40 miles | 7:00 AM | -- | ||
Wulfow (Lap 2) Second pass through Wulfow on Lap 2 of the 100 Mile. Water/limited aid only. | 81.30 miles | -- | -- | ||
Liberty Glen (Lap 2) Second pass through Liberty Glen on Lap 2 of the 100 Mile. | 83.80 miles | -- | -- | ||
Lone Rock (Lap 2) Cutoff is 31:30 hours (12:30 PM). Water only to next (4.1 mi), full aid at 8.25 mi. | 88.20 miles | 12:30 PM | -- | ||
Falcon's Nest (Lap 2) Second pass through Falcon's Nest on Lap 2 of the 100 Mile. Water/limited aid only. | 92.30 miles | -- | -- | ||
Lone Rock 2 (Lap 2) Second pass through Lone Rock 2 on Lap 2 of the 100 Mile. | 96.40 miles | -- | -- | ||
Finish 100 Mile finish. Cutoff is 36 hours (5:00 PM). Located at Lake Sonoma Recreation Area. | 100.50 miles | 5:00 PM | -- |
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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