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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 54 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
13
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Dec
27
Saturday

Brazen Almost New Year's Eve

5 km 10 km 13 mi
Dec
27
Saturday

Brazen New Year's Eve

Trail Run 5 km 10 km 13 mi
Dec
27
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
January 2026
Jan
1
Thursday

Brazen New Year's Day

Trail Run 5 km 10 km 13 mi
Jan
17
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
February 2026
Feb
14
Saturday

Bay Breeze - San Leandro

Trail Run 5 km 10 km 13 mi
Feb
28
Saturday

Victory

5 km 10 km 13 mi
March 2026
Mar
20-22
Fr - Su

Oakland Marathon

5 km 10 km 13 mi 26 mi
April 2026
Apr
4
Saturday

Golden Gate Headlands Marathon

Trail Run 10 km 13 mi 26 mi
Apr
4
Saturday

Diablo Trails Challenge

Trail Run 5 km 10 km 13 mi 50 km
Apr
11
Saturday

Romancing the Island Half Marathon

Trail Run 10 km 13 mi
Apr
25
Saturday

Mt. Tam Wild Boar Half Marathon

Trail Run 10 km 13 mi
May 2026
May
9
Saturday

Muir Woods Marathon

Trail Run 7 mi 13 mi 26 mi
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