Sonoma Fall Classic - 100 Mile Sufferfest

2026 edition
  • Lake Sonoma, Geyserville, California
  • Oct 17, 2026

2026 course

Published · public preview · Course updated Oct 15, 2026

Course map

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The course starts at Start/Finish and finishes at Start/Finish 5, covering 100.5 mi with 23 aid stations.

100.5 mi
Distance
25,058 ft
Total ascent
—
Total descent
36 hr
Overall cutoff

Aid stations & cutoffs

Aid stations and cutoffs for the Sonoma Fall Classic - 100 Mile Sufferfest course — Showing 4 of 23 aid stations.
MileStationCutoffElevationCrew accessPacer pickup
0.0Start/Finish——YesNot confirmed
5.8Pritchett Peak——NoNot confirmed
11.6Start/Finish 2——YesNot confirmed
13.6South Lake Trailhead——NoNot confirmed
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Segments

Course segments for Sonoma Fall Classic - 100 Mile Sufferfest — Showing 4 of 22 segments.
SegmentMilesGainLoss
Start/Finish to Pritchett Peak5.8 mi——
Pritchett Peak to Start/Finish 25.8 mi——
Start/Finish 2 to South Lake Trailhead2 mi——
South Lake Trailhead to Island View4.1 mi——
View all 22 segments

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Course files & source

Course details can change. Confirm final instructions with the organizer.

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