Course
Half Marathon21.1 km
10K10 km
Key dates
- ·RegistrationNot open yet
- ★Race daySat 21 Aug 2027
Date confirmed with the organiser · entry window checked by RunCalendar
Your next race, seen from above.
Save Mount Sneffels Half Marathon & 10K to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
Get RunCalendar
Save Mount Sneffels Half Marathon & 10K 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 ›
-
Sunrise Stampede
Now in its 40th year on Longmont's open space trails
-
Just Peachy 5K & 10K
Finishes with a peach at Palisade's Peach Festival
-
Telluride Mountain Run
A mountain ultra through Telluride's San Juan peaks
-
Boulder Rez Marathon
Flat course circling Boulder Reservoir with Rockies views
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.