Maine Triathlon Calendar 2025-2026

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Explore the best triathlons in Maine for 2025-2026! Our updated list features 73 exciting races across the region. Find your next race in Maine below and join the running community at these great events!

August 2026
Aug
15
Saturday

Breakaway 5K

5 km
Aug
15
Saturday

The Great Loon Triathlon

Triathlon
Aug
22
Saturday

Firebird Trail Races

Trail Run 13 mi Marathon 50 km
Aug
23
Sunday

Blueberry Cove Half Marathon

13 mi
September 2026
Sep
5
Saturday

Last Man Standing Ultramarathon

Backyard Ultra 4 mi
Sep
12
Saturday

Pumpkinman Triathlon Festival

Triathlon
Sep
12
Saturday

Megunticook Trail Festival

Trail Run 10 km 20 km 50 km
Sep
13
Sunday

Pumpkinman Half Marathon

5 km 14 km Half Marathon 30 km
Sep
19
Saturday

Mt. A Trail Challenge

Trail Run 5 km
Sep
20
Sunday

The Great Lincoln Marathon

5 km 10 km 13 mi 26 mi
Sep
20
Sunday

KAT-Walk & Karo for Brain Aneurysm Awareness

5 km
October 2026
Oct
3
Saturday

Peace Ridge Sanctuary’s 5k Run for the Animals

3 mi
Oct
10
Saturday

North American Wife Carrying Championship

Obstacle Run
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