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Trail Running Calendar near Castro Valley 2025-2026

Explore the top trail runs near Castro Valley for 2025-2026! We've gathered 70 exciting races in the area. Check out our detailed list below to find your next local race.

May 2025
May
10
Saturday

Nitro Trail

Trail Run 5 km 10 km 13 mi
May
10
Saturday

Quicksilver Endurance Runs

Trail Run 50 km 100 km
May
10
Saturday

Wildcat Prowl

5 km
May
11
Sunday

Mother's Day Run

5 km
May
17
Saturday

13 Mile Trail Race Top Down

Trail Run 13 mi
May
17
Saturday

Trailquake

Trail Run 5 km 10 km 13 mi
May
17
Saturday

Pacifica Foothills Trail Run

Trail Run 10 km 13 mi 30 km
May
24
Saturday

Armed Forces Half

5 km 13 mi
May
24
Saturday

Youth Triathlon Race

Triathlon
May
31
Saturday

Calero Trail Run - Spring

Trail Run 5 km 10 km ... 26 mi 50 km
May
31
Saturday

Beer City Half San Jose

5 km 10 km 13 mi
May - Jun
31-1
Sa - Su

San Jose Half Marathon

8 km 13 mi
May
31
Saturday

Wildcat Half Marathon

Trail Run 5 km 10 km 13 mi
May
31
Saturday

Strawberry Striders

5 km
June 2025
Jun
1
Sunday

Lake Chabot Trail Challenge

Trail Run 5 km 13 mi
Jun
1
Sunday

Cinderella Trail Run

Trail Run 8 km 13 mi ... 26 mi 50 km
Jun
1
Sunday

Statuto Race

2 mi 8 km
Jun
1
Sunday

Escape from Alcatraz Triathlon Semper Fi & America's Fund Team

Triathlon
Jun
5
Thursday

Cupertino Splash and Dash

Aquathlon
Jun
6
Friday

USS Hornet Twilight 5k

5 km
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