Riverhead
Triathlon Calendar near Riverhead 2026-2027
Monthly updates for Riverhead
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Explore the top triathlons near Riverhead for 2026-2027! We've gathered 3 exciting races in the area. Check out our detailed list below to find your next local race.
August 2026
Experience a USAT sanctioned sprint triathlon featuring a 500 meter swim in Narrow Bay and a scenic 5K run ending at the Atlantic Ocean. This multisport event offers individual, relay, and AquaBike categories at Smith Point County Park.
September 2026
A USAT sanctioned sprint triathlon at Madison Town Beach featuring a half-mile swim, 13-mile bike and 3-mile run, plus aquabike, youth, relay and parathlete divisions. Field limited to 500 and USAT membership is required.
A multi-format triathlon at Foster Memorial Town Beach in Sag Harbor on September 13, 2026, featuring an Olympic course with a 1.5K swim, 23.8 mile bike and 10K run, plus Super Sprint, Aquabike, relay and BikeRun options.