Upcoming Races in Marlborough
Endurance Grid lists 8 races in Marlborough, Connecticut, from May to October 2027.
Racing in Marlborough
The Marlborough race calendar is busiest in July, June, and May. It covers a range of endurance sports — you'll find races in Triathlon and Running — so there's usually a race near you. Distances span a wide range across those sports; you'll see Sprint, 5K, and Olympic.
Weather on race day varies by time of year, so it lives where it’s accurate — each race page shows that race’s typical high, low, and rain chance from NOAA climate normals for its venue and date.
City Elevation
522 ft
Nearest Airport
BDL
Bradley International Airport
Time Zone
Eastern Time
Race in Marlborough With Your People
Pick your race, start a group, and train together in the Endurance Grid app. Don’t wait for race day to celebrate.
Races in Marlborough, CT
Explore and filter upcoming endurance races in Marlborough, Connecticut on the map below — by sport, distance, price, or month.