Marlborough
Triathlon Calendar near Marlborough 2026-2027
Monthly updates for Marlborough
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Marlborough for 2026-2027! We've gathered 7 exciting races in the area. Check out our detailed list below to find your next local race.
June 2026
Lake Terramuggus Sprint Triathlon #1
The event takes place on June 18, 2026, at 200 Park Road in Marlborough, CT. The race starts at 6:15 PM. The Lake Terramuggus Sprint Triathlon is in its 25th year and has served as a first race for many Iron Dista..
July 2026
Lake Terramuggus Sprint Triathlon #2
This triathlon takes place on Thursday, July 2, 2026, starting at 6:15 PM EDT. The event is located at Blish Park in Marlborough, Connecticut (06447).
The race offers four different events: Sprint Tri, Super Sprin..
Experience the 25th year of this multisport event at Blish Park featuring a lake swim, rolling bike loops, and a scenic run with multiple distances including Sprint and Super Sprint options.
A summer evening triathlon at Lake Terramuggus offers multiple race formats, from a classic sprint to a shorter super sprint. The course features a lake swim, a rolling bike leg, and a scenic run around the water. It's the 25th year for this event in..
August 2026
Celebrate the achievements of young athletes at the Race4Chase Triathlon Program Finale in Connecticut. This exclusive event for program participants showcases the swimming, biking, and running skills gained over the summer.
The Niantic Bay Triathlon is scheduled for August 9, 2026, in Niantic, Connecticut. The event starts and is based at 400 Main Street.
Experience a scenic triathlon in Marlborough featuring a 1600 yard swim, 25 mile bike, and 10K run. Choose from individual, relay, or aquabike formats on a course with moderate hills at Lake Terramuggus.