Marin Ultra Challenge
Mar 13, 2027Sausalito, CA50 mi, 50K
Also 50K, 29 mi from Woodside/Purisima Creek Crossover
Woodside/Purisima Creek Crossover
- 10K entry
- $85
At a glance
- Last held
- Apr 18, 2026
- Next edition
- 2027 date not announced. Usually held in April.
- Location
- Redwood City, California
- Distances
- 50K, 35K, Half Marathon, 10K
Listed from UltraSignup. Checked Apr 12, 2026.
Plan this race for free
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Build my planAbout this race
A trail race through the forested slopes and steep canyons of Huddart Park and Purisima Creek Redwoods Open Space Preserve on the San Francisco Peninsula, featuring towering redwoods and beautiful single-track trails.
Key dates
Early Registration ends
Mar 20, 2026
Registration closes
Apr 17, 2026
Race day
Apr 18, 2026
Pricing
50K
After March 20
$140
35K
After March 20
$115
Half Marathon
After March 20
$100
10K
After March 20
$85
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Race planning
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