Course
Starts and finishes at Sandstone Ranch Park on CO-119 in Longmont, Colorado. The half marathon sets off at 7:30am and the 5K at 8:30am, both on measured and marked supported courses. The organiser publishes a route map but gives no detail on surface or aid stations.
Half Marathon21.1 km
5K5 km
Key dates
- !RegistrationOpen now
- ★Race daySun 2 May 2027
Date confirmed with the organiser · entry window checked by RunCalendar
About
Longmont's only Half Marathon - now offered in the cooler month of MAY! Join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!
Your next race, seen from above.
Save Longmont Half & 5k (LM Half) to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
Get RunCalendar
Save Longmont Half & 5k (LM Half) to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
More races in Colorado All ›
-
Colorado Marathon
One of Colorados fastest downhill marathons through Poudre Canyon
-
Collegiate Peaks Trail Run
A premier Rocky Mountain trail run with stunning alpine vistas
-
-
Run this event? Claim it on runcalendar.com
Visit event website ›
A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.