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Half Marathon Calendar near East San Mateo 2025-2026

Explore the top half marathons near East San Mateo for 2025-2026! We've gathered 51 exciting races in the area. Check out our detailed list below to find your next local race.

November 2025
Nov
29
Sa

Quarry Turkey Half Marathon
Trail Run 5 km 10 km Half Marathon
Nov
29
Sa

The Best Races - San Francisco
5 km 10 km 13 mi
December 2025
Dec
6
Sa

Zombierunner Quarry Lakes
Trail Run 5 km 10 km ... 30 km Marathon
Dec
6
Sa

Calero Trail Run - Winter
Trail Run 5 km 10 km ... Marathon 50 km
Dec
13
Sa

Summit Rock Half Marathon
Trail Run 5 km 10 km Half Marathon
Dec
13
Sa

Hark the Herald Half Marathon
Trail Run 10 km Half Marathon
Dec
13
Sa

The Best Races - San Francisco
5 km 10 km Half Marathon
Dec
20
Sa

Woodside Ramble
Trail Run 10 km Half Marathon 35 km 50 km
Dec
27
Sa

Brazen Almost New Year's Eve
5 km 10 km Half Marathon
Dec
27
Sa

Brazen New Year's Eve
Trail Run 5 km 10 km Half Marathon
Dec
27
Sa

The Best Races - San Francisco
5 km 10 km 13 mi
January 2026
Jan
1
Th

Brazen New Year's Day
Trail Run 5 km 10 km Half Marathon
Jan
3
Sa

Hacienda Hills Trail Run - Winter
Trail Run 5 km 10 km ... Marathon 50 km
Jan
17
Sa

The Best Races - San Francisco
5 km 10 km 13 mi
Jan
18
Su

Crystal Springs (Winter) Trail Run
Trail Run 8 km Half Marathon ... Marathon 50 km
Jan
18
Su

Crystal Springs Trail Run
Trail Run 8 km Half Marathon ... Marathon 50 km
Jan
24
Sa

Pacifica Foothills Trail Run
Trail Run 10 km Half Marathon 30 km
Jan
31
Sa

Coyote Hills Run
Trail Run 5 km 10 km Half Marathon
February 2026
Feb
7
Sa

Mt. Umunhum Trail Conquest - Winter
Trail Run 5 km 7 mi ... Marathon 50 km
Feb
7
Sa

Golden Gate Trail Run
Trail Run 8 km Half Marathon ... Marathon 50 km