Running Races in Brunswick, Maine 2026 | Browse All Races

There are 5 running races in Brunswick, Maine in 2026. The next is the The Polar Bear Triathlon and Duathlon on May 2. Distances include 5K races, trail runs, ultras.

The Polar Bear Triathlon and Duathlon

Sat, May 2 · Brunswick, ME Brunswick

Virtual Virtual TriathlonCollege Student Sprint TriathlonDuathlon +6

From $60 Open 3 spots left

Buttermilk Mountain Backyard Bash

Sat, May 9 · Brunswick, ME Brunswick

Ultra Buttermilk Mountain Backyard Bash

From $20 Open Closing Soon 100 spots left

14th Annual Androscoggin Bank Run for Independence

Sat, May 16 · Brunswick, ME Brunswick

Road 1 mile5K

From $20 Open

2026 Unified 5K - Brunswick

Sat, Jun 13 · Brunswick, ME Brunswick

Road 1 Mile Walk/Run/Roll5k Walk/Run/Roll (Early Start)5k Run or Roll

From $30 Open

Field & Forest 5 Miler

Sun, Jun 21 · Brunswick, ME Brunswick

Trail Field & Forest 5 Miler

From $35 Open 50 spots left

Running Races in Brunswick, Maine — 2026

The Polar Bear Triathlon and Duathlon

Buttermilk Mountain Backyard Bash

14th Annual Androscoggin Bank Run for Independence

2026 Unified 5K - Brunswick

Field & Forest 5 Miler

All Maine Races