21K events in the United States
Find 21k events in the United States. Compare 2 upcoming events by date and location. Open a race guide for the course, recorded editions and official entry information where available.
Events to explore include Desert RATS Trail Running Festival by UTMB and Grindstone Trail Running Festival.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
5 listed events · 2 with upcoming dates
Upcoming 21k events
2 matching events, earliest date first. Entry availability is shown separately.
Desert RATS Trail Running Festival by UTMB
USAFruita, Colorado
Desert RATS Trail Running Festival by UTMB — an official UTMB World Series Event.
Date listed · latest organiser confirmation not yet checked.
Grindstone Trail Running Festival
USANatural Chimneys Park, VA
Grindstone Trail Running Festival — an official UTMB World Series Event.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Race archive
Past races and previous editions
Looking back at a race? Browse the guides below for recorded editions. This section also includes events awaiting a new date and cancelled editions. Previous editions of races in the upcoming calendar are available through their race guides above.
HOKA Kodiak Ultra Marathons by UTMB
USABig Bear Lake, California
HOKA Kodiak Ultra Marathons by UTMB — an official UTMB World Series Major.
Next date not listed
Race guide and recorded editions →Mount Diablo trail run — 21K
USA
Historical results collected from the UTMB Index.
Next date not listed
Race guide and recorded editions →PIKES PEAK — ASCENT
USA
Historical results collected from the UTMB Index.
Next date not listed
Race guide and recorded editions →Choosing a race in United States
The unfiltered upcoming calendar includes events in Fruita, Colorado (1), Natural Chimneys Park, VA (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about 21k events in United States
What should I check before a running event in United States?
Choose your distance, then check the route, elevation, cut-off time and entry conditions in the organiser’s race guide.
Which 21k events are coming up in the United States?
Desert RATS Trail Running Festival by UTMB is listed for 11 April 2027. Grindstone Trail Running Festival is listed for 25 September 2027 (status to be confirmed). Check the race guide and organiser’s latest information before making plans.
Where can I find race entry details for the United States?
Follow the link from the race guide to the organiser or entry provider, where one is available. Check the entry deadline, eligibility and current availability there. A listed race date does not necessarily mean entries are still open.
Why has a race moved out of the upcoming calendar?
Once its listed dates have passed, a race moves to the past-editions view unless another upcoming edition is recorded. Cancelled events also leave the upcoming list. The race guide stays available, and the event returns when a new date is added.