Marlborough
Triathlon Calendar near Marlborough 2026-2027
Monthly updates for Marlborough
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Explore the top triathlons near Marlborough for 2026-2027! We've gathered 5 exciting races in the area. Check out our detailed list below to find your next local race.
Join the 25th annual Lake Terramuggus Sprint Triathlon on July 16, 2026 at Blish Park in Marlborough CT. Choose sprint, super sprint, relay or aqua bike and enjoy a scenic lake swim, rolling bike loops and a lakeside 5K.
August 2026
Take on the classic Olympic distance triathlon at scenic Lake Terramuggus with a 1600 yard swim, 25 miles bike and 10K run. Relay and aquabike options and a moderately hilly course make for a rewarding day of racing.