7 Upcoming Half Marathon Races Near Guerneville, CA

Muir Woods Mt. Challenge

Stinson Beach, CA

Saturday, July 18th, 2026

Half

10K

Trail

View details for race Muir Woods Mt. Challenge

2026 Napa to Sonoma Wine Country Half Marathon ...

Napa, CA

Saturday, July 25th, 2026

Half

View details for race 2026 Napa to Sonoma Wine Country Half Marathon & Rosé 5K

The Honey Badger Half (& 10K/5K)

Santa Venetia, CA

Friday, September 11th, 2026

10K

Half

Trail

View details for race The Honey Badger Half (& 10K/5K)

The Running Fence Run: A Run of Freedom- Celebr...

Bloomfield, CA

Saturday, September 12th, 2026

Marathon

Half

10K

View details for race The Running Fence Run: A Run of Freedom- Celebrating Christo's 1976 "Running Fence” art project

Organize a race? Get it in front of thousands of runners.

Add it free Feature it

SGRAIL Marin - Triathlon & Trail Half Marathon

San Rafael, CA

Friday, October 2nd, 2026

Ultra

Half

1 Mile

Trail

View details for race SGRAIL Marin - Triathlon & Trail Half Marathon

Napa Half Marathon

Napa, CA

Sunday, October 4th, 2026

Half

10K

View details for race Napa Half Marathon

Beer City Half™ Santa Rosa

Santa Rosa, CA

Saturday, February 20th, 2027

Half

10K

View details for race Beer City Half™ Santa Rosa

Explore more in Guerneville, CA

Jump straight to races by distance, month, or type.

Distance

5K 10K Half Marathon Marathon

Month

July August September

Race type

Trail Boston Qualifiers Fast Courses

Run clubs

Run clubs in Guerneville

Nearby

Bloomfield Santa Rosa Napa San Francisco Alameda Oakland All California races