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Lake Sonoma 100 Miler

Name: Lake Sonoma 100 Miler
Start: 2025-02-01
End: 2025-02-01
Location: Geyserville

Geyserville, United States • 1 Feb 2025

The Lake Sonoma 100 Miler is an exciting endurance running event set in Geyserville, California, featuring a challenging 100-mile course with approximately 27,000 feet of elevation gain. The race emphasizes a festival-like atmosphere, complete with live music, food trucks, and wine tasting at the start/finish area. Participants can also enjoy a unique "Little Baby" backyard run.

The event prioritizes runner experience with generous cutoff times, excellent aid stations, and a focus on community engagement, including charity support for the Children of Vineyard Workers Scholarship Fund. The race is designed to be memorable, whether runners face sunny or muddy conditions. Visit the organization's website for the most recent information.

United States California Geyserville

Race information

Website Registration

100 mi

100 Miler

100 mi

100m 4 Person Relay

50 mi

50m 4 Person Relay

Baby Backyard

Visit the organization's website for the most recent information.

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The 30th annual Jackrabbit Derby on May 17, 2026 at Spring Lake Regional Park in Santa Rosa features a 3 mile cross country race and a 1K Bunny Hop for kids. Online registration closes May 15 and members have free online entry.

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