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

February 2026
Feb
7
Saturday

Golden Gate Trail Run

Trail Run 8 km Half Marathon ... Marathon 50 km
Feb
14
Saturday

Bay Breeze - San Leandro

Trail Run 5 km 10 km Half Marathon
Feb
21
Saturday

Redtail Ridge

Trail Run 5 km 10 km ... 30 km 50 km
Feb
21
Saturday

Montara Mountain Trail Run

Trail Run 10 km Half Marathon ... Marathon 50 km
Feb
28
Saturday

Victory

5 km 10 km Half Marathon
March 2026
Mar
13-16
Fr - Mo

The Rattlesnake Ramble

Trail Run 5 km 10 km Half Marathon
Mar
14
Saturday

Zoom San Francisco

5 km 10 km Half Marathon
Mar
21
Saturday

Oakland Marathon

5 km 10 km Half Marathon Marathon
Mar
21
Saturday

Redwood (Spring) Trail Run

Trail Run 5 km 5 mi ... Marathon 50 km
April 2026
Apr
4
Saturday

Golden Gate Headlands Marathon

Trail Run 10 km Half Marathon Marathon
Apr
4
Saturday

Diablo Trails Challenge

Trail Run 5 km 10 km Half Marathon 50 km
Apr
11
Saturday

Romancing the Island Half Marathon

Trail Run 10 km Half Marathon
Apr
25
Saturday

Mt. Tam Wild Boar Half Marathon

Trail Run 10 km Half Marathon
May 2026
May
9
Saturday

Muir Woods Marathon

Trail Run 7 mi Half Marathon Marathon
May
9
Saturday

Grizzly Peak Trail Run

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

Wildcat Half Marathon

Trail Run 5 km 10 km Half Marathon
May
30
Saturday

Nitro Trail

Trail Run 5 km 10 km Half Marathon
May
30
Saturday

Cinderella Trail Run

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

Lake Chabot Trail Challenge

Trail Run 5 km Half Marathon
Jun
28
Sunday

Mare Island Half Marathon

5 km 10 km Half Marathon
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