Boulderthon Half Marathon
· starts 07:30
Boulder, CO
Boulderthon Half Marathon is a road race of 13.1 miles (21.1 km) in Boulder, Colorado. The next edition is on Sunday, September 27, 2026, starting at 07:30. The race gives its climbing as 492 ft (150 m). Registration is open to all. The field is about 5,100 runners.
Questions about Boulderthon Half Marathon
When is Boulderthon Half Marathon 2026?
Boulderthon Half Marathon 2026 is on Sunday, September 27, 2026, starting at 07:30 local time.
Where is Boulderthon Half Marathon?
Boulderthon Half Marathon is held in Boulder, Colorado.
How long is Boulderthon Half Marathon?
Boulderthon Half Marathon is 13.1 miles (21.1 km).
How much elevation gain does Boulderthon Half Marathon have?
Boulderthon Half Marathon has 492 ft (150 m) of elevation gain, as the race states it.
How do you get into Boulderthon Half Marathon?
Boulderthon Half Marathon has open registration.
What is the weather usually like at Boulderthon Half Marathon?
Around Boulderthon Half Marathon's date, the day's high is typically about 70°F (21°C) and the low about 46°F (8°C), averaged over recent years.
More like it
Updated