Half Marathons in Maine 2026 | Upcoming Races & Dates

There are 6 half marathons in Maine scheduled for 2026. The next is the Autumn & Ales 5K, 10K, and 1/2 Marathon in Scarborough on September 12. Maine half marathons run primarily August through April.

Pemaquid Beach Triathlon

Sun, Aug 23 · New Harbor, ME New Harbor

TriathlonRelay

From $95 Open

Autumn & Ales 5K, 10K, and 1/2 Marathon

Sat, Sep 12 · Scarborough, ME Scarborough

5K10KHalf Marathon

From $45 Open

2026 Bar Harbor Bank & Trust Half Marathon and Fall 5K

Sat, Sep 12 · Bar Harbor, ME Bar Harbor

Fall 5K1/2 Marathon1/2 Marathon - Walker

From $35 Open 58 spots left

Will to Run Challenge

Fri, Sep 18 · Kennebunk, ME Kennebunk

Will to Run Challenge 5KWill to Run 5K (in person)Will to Run Challenge 10K +1

From $30 Open

Moosehorn Ghost Run Half-Marathon and Relay

Sun, Nov 1 · Baileyville, ME Baileyville

Half-Marathon RelayHalf-Marathon

From $26 Closed 38 spots left

Boyden Lake Half-Marathon

Sun, Apr 11 · Perry, ME Perry

WalkRuckRuck +7

From $27 Closed 10 spots left

Half Marathons in Maine — 2026