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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.

September 2025
Sep
13
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Sep
21
Sunday

Island Running Festival

5 km 10 km 13 mi
Sep
27
Saturday

Pacifica Summit Run

Trail Run 10 km 13 mi
October 2025
Oct
4
Saturday

Star City San Bruno Mountain Half Marathon

Trail Run 5 km 13 mi
Oct
4
Saturday

Reservoir Dogs Trail Run - Orinda, CA

Trail Run 10 km 13 mi 35 km
Oct
4
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Oct
11
Saturday

Look Good Feel Good San Leandro Marathon

5 km 10 km 13 mi 26 mi
Oct
12
Sunday

Clo Cow Half Marathon

5 km 10 km 13 mi
Oct
18
Saturday

Diablo Summit Stomp

Trail Run 5 km 10 km 13 mi 30 km
Oct
18
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Oct
25
Saturday

Pinkathon Challenge for Breast Cancer

5 km 10 km ... 26 mi 50 km
Oct
25
Saturday

Oakland Hills Trail Run

Trail Run 10 km 13 mi 35 km
November 2025
Nov
1
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Nov
2
Sunday

Golden Gate Half Marathon

5 km 13 mi
Nov
8
Saturday

Lake Chabot Trail Run

Trail Run 8 km 13 mi ... 26 mi 50 km
Nov
8
Saturday

Mt. Tam Trail Run

Trail Run 10 km 13 mi 30 km 50 km
Nov
15
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Nov
29
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
December 2025
Dec
6
Saturday

Inside Trail - Peacock Gap Trail Run

Trail Run 10 km 13 mi 30 km
Dec
13
Saturday

Hark the Herald Half Marathon

Trail Run 10 km 13 mi
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