Races in Thornton, United States
Find running events in this area
8 upcoming races
View Race Calendar 2026
10 mi
RMRR Spring Marathon Training Series #2
Apr 11
Thornton, United States
20 mi
RMRR Spring Marathon Training Series #2
Apr 11
Thornton, United States
5K
Unicorn 5k (North) (3.1 Miles)
Jun 20
Thornton, United States
1K
Unicorn 5k (North) (1K)
Jun 20
Thornton, United States
5K
RMRR September Trophy Series (5 km)
Sep 13
Thornton, United States
5K
I Can 5k (3.1 Miles)
Oct 3
Thornton, United States
5K
I Ain't Scared (of 5k) (3.1 Miles)
Oct 31
Thornton, United States
5K
WinterFest 5k & Fun Run (3.1 Miles)
Dec 12
Thornton, United States
Looking for more races?
Discover races in the area around Thornton