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Half Marathon Calendar near Mill Valley 2025-2026

Explore the top half marathons near Mill Valley for 2025-2026! We've gathered 36 exciting races in the area. Check out our detailed list below to find your next local race.

April 2026
Apr
11
Sa

Lake Chabot Trail Run

Trail Run 8 km Half Marathon ... Marathon 50 km
Apr
25
Sa

Mt. Tam Wild Boar Half Marathon

Trail Run 10 km Half Marathon
May 2026
May
9
Sa

Muir Woods Marathon

Trail Run 7 mi Half Marathon Marathon
May
9
Sa

Grizzly Peak Trail Run

Trail Run 10 km Half Marathon ... Marathon 50 km
May
16
Sa

Wildcat Half Marathon

Trail Run 5 km 10 km Half Marathon
May
30
Sa

Nitro Trail

Trail Run 5 km 10 km Half Marathon
May
30
Sa

Cinderella Trail Run

Trail Run 8 km Half Marathon ... Marathon 50 km
June 2026
Jun
7
Su

Lake Chabot Trail Challenge

Trail Run 3 mi 13 mi
Jun
28
Su

Mare Island Half Marathon

5 km 10 km Half Marathon
July 2026
Jul
11
Sa

Beer City Half Alameda

5 km 10 km 13 mi
Jul
18-19
Sa - Su

Napa to Sonoma Half Marathon

5 km Half Marathon
Jul
25-26
Sa - Su

The San Francisco Marathon

5 km 10 km Half Marathon Marathon
August 2026
Aug
1
Sa

Summer Breeze

5 km 10 km Half Marathon 50 km
Aug
15
Sa

Redwood (Summer) Trail Run

Trail Run 5 mi Half Marathon ... Marathon 50 km
September 2026
Sep
20
Su

Island Running Festival

5 km 10 km Half Marathon
November 2026
Nov
1
Su

Golden Gate Half Marathon

5 km Half Marathon