drag and zoom the map
This week
20SAT
9
MAY
Buttermilk Mountain Backyard Bash
Brunswick, US
SAT
9
MAY
Bath Area Food Bank 5K Turkey Trot
Bath, US
SAT
9
MAY
Dixon's Revenge Trail Race
Rollinsford, US
SAT
9
MAY
NOCC Team Teal Run and Walk
Portsmouth, US
SAT
9
MAY
Enjoy Your Life Happy Half Marathon & Friendly 5K
Amesbury, US
SAT
9
MAY
Barns & Blooms Half Marathon
South Hamilton, US
SAT
9
MAY
Ryan’s Run: A 5K for Recovery & Hope
Concord, US
SAT
9
MAY
Stride Along the Tide 5K
Nahant Lowlands Park, US
SAT
9
MAY
Boston Marine Corps Honor Run
Boston, US
SUN
10
MAY
Jennie's Run
Bath, US
SUN
10
MAY
Portland Sea Dogs Mother's Day 5K
Portland, US
SUN
10
MAY
2025 Moms on the Run 5k
Dover, US
SUN
10
MAY
Moms On The Run 5K Run/Walk
Dover, US
SUN
10
MAY
Mother's Day 5K Run/Walk
Georgetown, US
SUN
10
MAY
Healthy Kids Running Series Spring 2026 - North Reading, MA
North Reading, US
SUN
10
MAY
Healthy Kids Running Series Spring 2026 - Concord, NH
Concord, US
SUN
10
MAY
Mother’s Day Hope 5k
Concord, US
SUN
10
MAY
Healthy Kids Running Series Spring 2026 - Tewksbury, MA
Tewksbury, US
SUN
10
MAY
Melrose Run for Women
Melrose, US
TUE
12
MAY
Wildflower Walk at Step Falls 5/12
Newry, US
Buttermilk Mountain Backyard Bash
Saturday, May 9, 2026 · Brunswick, United States
Distances
80.5km
Start location
About this race
A backyard-style ultra on coastal Maine trails. Complete a 4.17-mile lap on single and double track every hour on the hour. Fail to finish within the hour, and your race is over. Whether you're a "lactate demolishing machine" pushing for the full 50 miles, or a casual trail runner looking to "put in a few hours outside" on a "long, fun, hard day of running," the Buttermilk Mountain Backyard Bash offers a unique challenge for all experience levels.