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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34 races within 25 mi of Flat Rock, MI
Ann Arbor, MI24 mi away
Good weather · 83/100 Typical: 72° / 50°F · 41% rain
4% faster times (half)past finishers
Taylor, MI8 mi awayRegistration opens Dec 6, 2026
Good weather · 82/100
39% slower times (5K)past finishers
Detroit, MI24 mi away
Good weather · 76/100 Typical: 76° / 56°F · 48% rain
15% slower times (5K)past finishers
Ann Arbor, MI24 mi away
Fair weather · 67/100 Typical: 81° / 61°F · 39% rain
9% faster times (5K)past finishers
Ann Arbor, MI24 mi away
Tough weather · 50/100 Typical: 83° / 62°F · 42% rain
Ypsilanti, MI19 mi away
Fair weather · 64/100 Typical: 80° / 59°F · 38% rain
Detroit, MI22 mi away
Good weather · 80/100 Typical: 74° / 55°F · 33% rain
18% slower times (5K)past finishers
Ann Arbor, MI24 mi away
Good weather · 77/100 Typical: 69° / 49°F · 35% rain