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Triathlon Calendar near Casco 2025-2026

Explore the top triathlons near Casco for 2025-2026! We've gathered 18 exciting races in the area. Check out our detailed list below to find your next local race.

September 2025
Sep
28
Sunday

Pleasant Mountain Race

Trail Run 21 km
October 2025
Oct
4
Saturday

Bubba's Backyard Ultra

Backyard Ultra 3 mi
Oct
5
Sunday

Maine Marathon

13 mi 26 mi
Oct
12
Sunday

The Land of Light 100k

Trail Run 100 km
Oct
19
Sunday

Fair Election 5K

5 km
Oct
26
Sunday

Big Brad Ultras

Trail Run 25 km 50 km 50 mi
November 2025
Nov
9
Sunday

Kick Out Mesothelioma 5-Miler In Memory of John W. Griffin

2 mi 5 mi
December 2025
Dec
6
Saturday

Ugly Sweater 5K

5 km
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