Lake Sonoma 100K results

  • Saturday, April 11, 2026
  • Geyserville, California
  • Ultramarathon

Results by year

Results FAQ

Where can I find the 2026 Lake Sonoma 100K results?

The 2026 Lake Sonoma 100K results are at ultrasignup.com.

When is the next Lake Sonoma 100K?

Saturday, April 10, 2027. Entry and course: race guide.

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