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Half Marathon Calendar near Clayton 2026-2027

Monthly updates for Clayton

Get new running races (and updates) in your inbox every month.

Explore the top half marathons near Clayton for 2026-2027! We've gathered 48 exciting races in the area. Check out our detailed list below to find your next local race.

September 2026
Sep
12
Sa

Berkeley Trail Adventure

Trail Run 10 km Half Marathon 35 km 50 km
Sep
12
Sa

Beer City Half Bishop Ranch

5 km 10 km 13 mi
Sep
13
Su

Delta Harvest Run

5 km 10 km 13 mi
Sep
19
Sa

Rocky Ridge Trail Half Marathon

Trail Run 5 km 10 km Half Marathon
Sep
20
Su

Island Running Festival

5 km 6 mi 13 mi
October 2026
Oct
10
Sa

Reservoir Dogs Trail Run - Orinda, CA

Trail Run 5 km 10 km Half Marathon 35 km
Oct
17
Sa

Diablo Summit Stomp

Trail Run 5 km 10 km Half Marathon 30 km
Oct
24
Sa

Oakland Hills Trail Run

Trail Run 10 km 13 mi 35 km
November 2026
Nov
1
Su

Golden Gate Half Marathon

5 km 13 mi
Nov
5
Th

RunThrough San Francisco at Crissy Field

5 km 10 km Half Marathon
Nov
7
Sa

Lake Chabot Trail Run

Trail Run 2 mi 3 mi ... 26 mi 50 km
Nov
7
Sa

Beer City Half - Piedmont

5 km 10 km Half Marathon
Nov
14
Sa

Berkeley Half Marathon

5 km 10 km Half Marathon
Nov
14
Sa

Zombierunner Quarry Lakes

Trail Run 2 mi 5 km 10 km 13 mi
Nov
28
Sa

Quarry Turkey Half Marathon

Trail Run 5 km 10 km 13 mi
December 2026
Dec
31
Th

Brazen New Year's Eve

Trail Run 5 km 10 km 13 mi
January 2027
Jan
1
Fr

Brazen New Year's Day

Trail Run 5 km 10 km Half Marathon
Jan
30
Sa

Coyote Hills Run

Trail Run 5 km 10 km Half Marathon
February 2027
Feb
13
Sa

Bay Breeze - San Leandro

Trail Run 5 km 10 km Half Marathon
Feb
20
Sa

Victory

5 km 10 km Half Marathon
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