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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84 races within 25 mi of Southboro, MA
Sterling, MA16 mi away
Fair weather · 59/100 Typical: 33° / 19°F · 34% rain
Whitinsville, MA15 mi away
Fair weather · 66/100 Typical: 38° / 24°F · 35% rain
19% faster times (5K)past finishers
Needham, MA15 mi away
Fair weather · 63/100 Typical: 36° / 22°F · 35% rain
Lexington, MA18 mi away
Fair weather · 64/100 Typical: 35° / 21°F · 28% rain
12% faster times (5K)past finishers
Cumberland, RI24 mi away
Ideal weather · 92/100 Typical: 45° / 29°F · 28% rain
Worcester, MA17 mi away
Good weather · 71/100 Typical: 43° / 25°F · 29% rain
7% faster times (5K)past finishers
Westwood, MA16 mi awayRegistration opens Nov 16, 2026
Good weather · 77/100 Typical: 46° / 29°F · 27% rain
Hopkinton, MA5 mi away
Good weather · 84/100 Typical: 54° / 36°F · 35% rain
Grafton, MA10 mi away
Ideal weather · 90/100 Typical: 58° / 38°F · 30% rain
Weston, MA12 mi awayRegistration opens Jan 1, 2027
Ideal weather · 92/100 Typical: 58° / 39°F · 37% rain
Canton, MA23 mi awayRegistration opens Jan 4, 2027
Ideal weather · 90/100 Typical: 60° / 40°F · 36% rain
9% faster times (5K)past finishers
Framingham, MA5 mi away
Ideal weather · 91/100 Typical: 61° / 42°F · 38% rain
16% slower times (5K)past finishers
Worcester, MA14 mi away
Ideal weather · 90/100 Typical: 62° / 41°F · 40% rain
9% faster times (5K)past finishers
Grafton, MA10 mi awayRegistration opens Dec 31, 2026
Ideal weather · 90/100 Typical: 64° / 45°F · 40% rain
Lexington, MA18 mi away
Ideal weather · 91/100 Typical: 64° / 45°F · 38% rain
9% faster times (5K)past finishers
Milton, MA23 mi awayRegistration opens Dec 1, 2026
Ideal weather · 91/100 Typical: 66° / 47°F · 38% rain
Arlington, MA21 mi awayRegistration opens Feb 10, 2027
Ideal weather · 91/100 Typical: 65° / 47°F · 37% rain
Boston, MA24 mi away
Ideal weather · 91/100 Typical: 65° / 47°F · 37% rain