Race catalog · Updated nightly
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Upcoming running, cycling, triathlon and ultra races, updated nightly from RunSignup, BikeReg and ACTIVE. Missing a race? Submit it
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Race catalog · Updated nightly
Upcoming running, cycling, triathlon and ultra races, updated nightly from RunSignup, BikeReg and ACTIVE. Missing a race? Submit it
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59 races within 25 mi of Union City, CA
Alameda, CA17 mi away
Ideal weather · 99/100 Typical: 72° / 53°F · 0% rain
5% faster times (5K)past finishers
Palo Alto, CA24 mi away
Ideal weather · 93/100 Typical: 85° / 53°F · 0% rain
19% slower times (5K)past finishers
Castro Valley, CA11 mi away
Good weather · 79/100 Typical: 86° / 54°F · 0% rain
28% slower times (half)past finishers
Menlo Park, CA11 mi awayRegistration opens Jul 9, 2027
Ideal weather · 100/100 Typical: 88° / 55°F · 0% rain
San Ramon, CA13 mi away
Good weather · 75/100 Typical: 87° / 56°F · 2% rain
Newark, CA6 mi away
Ideal weather · 96/100 Typical: 84° / 54°F · 4% rain
Oakland, CA15 mi away
Ideal weather · 91/100 Typical: 86° / 55°F · 4% rain
10% slower times (5K)past finishers