Annadel Half Marathon

Saturday, April 18, 2026

Santa Rosa, California

Race Day

Saturday, April 18, 2026

Course

Loop

Also Offers

10K5K trail run

Registration

Race Website

Official race information

☀

Avg High

68°F

☽

Avg Low

45°F

☂

Precip

0.06 in

🍃

Wind

9.2 mph

74% humidity·Based on 5-year historical data

APR 4

Diablo Trails Challenge

APR 4

Billy Goat Mountain Climb

APR 4

Golden Gate Headlands Marathon

APR 4

Hoppy Easter 5k, 10k, 15k, Half Marathon

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Race Day

Saturday, April 18, 2026

Course

Loop

Also Offers

10K5K trail run

Registration

Race Website

Official race information