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Triathlon Calendar near Stony Brook 2025-2026

Explore the top triathlons near Stony Brook for 2025-2026! We've gathered 105 exciting races in the area. Check out our detailed list below to find your next local race.

May 2026
May
17
Sunday

SOUL RYEDERS Half Marathon

5 km 13 mi
May
23
Saturday

Run for Briggs 5K

5 km
June 2026
Jun
21
Sunday

Massapequa Firecracker 5K Run/Walk

5 km
Jun
21
Sunday

NSRF Presents The Rainbow Run 5K

5 km
July 2026
Jul
4
Saturday

Independence Day 4 Mile Run/Walk

4 mi
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