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California Fall Classic at Lake Sonoma

Healdsburg, United States • 18 Oct 2025

The California Fall Classic at Lake Sonoma, held in Healdsburg, CA, offers two challenging ultramarathon distances: 100K and 55K. Set amidst the scenic wine country during harvest season, the courses feature relentless single-track trails with stunning views of Lake Sonoma. The 100K serves as a Western States Endurance Run qualifier with an 18-hour cutoff, while the 55K is ideal for first-time ultra runners. Both races include multiple aid and water stations spaced to ensure runner support throughout. The event weekend also features on-site camping, live music, and local food and wine, creating a vibrant community atmosphere that benefits the Children of Vineyard Workers Scholarship Fund. Visit the organization's website for the most recent information.

United States California Healdsburg

Race information

Website Registration
100 km
100k
55 km
55k
Visit the organization's website for the most recent information.
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