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!

September 2025
Sep
6
Saturday

Pumpkinman Triathlon Festival

Triathlon
Sep
6
Saturday

Cherry Hill Farm Ultra

Trail Run 25 km 50 km
Sep
6
Saturday

Megunticook Trail Festival

Trail Run 10 km 20 km 50 km
Sep
7
Sunday

Pumpkinman Half Marathon

5 km 6 mi ... 13 mi 30 km
Sep
7
Sunday

Lake Auburn Half Marathon

Sep
13
Saturday

Bar Harbor Bank & Trust Half Marathon

5 km 13 mi
Sep
14
Sunday

The Great Lincoln Marathon

5 km 13 mi 26 mi
Sep
20
Saturday

Waldoboro Half Marathon

13 mi
Sep
20
Saturday

ACT Trail Fest

Trail Run 5 km 10 km 13 mi
Sep
20
Saturday

Autumn & Ales

5 km 10 km 13 mi
Sep
20
Saturday

Mt. A Trail Challenge

Trail Run 5 km
Sep
21
Sunday

Almost Half Way to St. Patrick's Day 5K

5 km
Sep
28
Sunday

Farm to Farm Ultra

Trail Run 25 km 50 km 50 mi
Sep
28
Sunday

St. Joseph Hospital's Commit to Community

10 km
Sep
28
Sunday

Pleasant Mountain Race

Trail Run 21 km
October 2025
Oct
4
Saturday

Peace Ridge Sanctuary’s 5k Run for the Animals

5 km
Oct
5
Sunday

Maine Marathon

13 mi 26 mi
Oct
5
Sunday

Trust Trail Fest October

Trail Run 5 km 10 km
Oct
12
Sunday

The Land of Light 100k

Trail Run 100 km
Oct
12
Sunday

Beach and Road 10K

10 km
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