Maine Triathlon Calendar 2025-2026

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Explore the best triathlons in Maine for 2025-2026! Our updated list features 91 exciting races across the region. Find your next race in Maine below and join the running community at these great events!

October 2025
Oct
19
Sunday

Fair Election 5K

5 km
Oct
19
Sunday

Save Your Breath 5K

5 km
Oct
19
Sunday

The Great Waterville Marathon

13 mi 26 mi
Oct
19
Sunday

Mount Desert Island Marathon

21 km 42 km
Oct
26
Sunday

Moosehorn Ghost Run Half-Marathon

13 mi
Oct
26
Sunday

Big Brad Ultras

Trail Run 25 km 50 km 50 mi
Oct
26
Sunday

Wildlands Summit Run

Trail Run 6 mi
November 2025
Nov
9
Sunday

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

2 mi 5 mi
Nov
9
Sunday

Bold Coast Bash

Trail Run 10 mi 50 km
December 2025
Dec
6
Saturday

Ugly Sweater 5K

5 km
Dec
20
Saturday

Seaside Santa Dash

5 km 10 km
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