When does the Three Creeks Half Marathon sell out?

Three Creeks Half Marathon hasn't published a hard registration deadline. Most races of this size raise the entry fee in tiers (early-bird, regular, late) and can sell out without warning — sign up early if you're committed.

Half Marathon

Road

Three Creeks Half Marathon

Q: How hard is the Three Creeks Half Marathon Half Marathon?

Three Creeks Half Marathon is a Half Marathon on a road course in Englewood, Colorado. We don't have a verified elevation profile yet — check the organizer's course map for the climb breakdown.

Q: What should I wear for the Three Creeks Half Marathon?

Race-day weather in Englewood can swing year over year, so dress for the forecast on the day. As a rule of thumb, dress for ~10°F warmer than the standing temperature once you start running. Layer with a throwaway long-sleeve at the start, gloves and a hat for sub-50°F mornings, and a singlet plus a visor when it climbs above 60°F. The published start time is 8:00 AM. Check the race-day weather forecast on this page closer to the date for a specific recommendation.

April 5, 2026

Englewood, Colorado

Rolling Course

Decision scores

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We're still profiling this race — fit signals coming soon.

About the Race

FULL WEBSITE AT: http://www.racingunderground.com/threecreeks/ Welcome to Denver's Best Spring Half Marathon! Sunday April 5, 2026 at Cherry Creek State Park Racing Underground brings you an amazing half marathon this spring! The Three Creeks Half Marathon features a half marathon course that is flat, fast and scenic! Travel on foot through some of the most beautiful parts of Cherry Creek State Park, with a total combined elevation gain of only 291 feet spread out over 13.1 miles as the cours...

Course Profile

Course profile data unavailable for this race.

Course features

Terrain

road

Surface

Road

Elevation gain

Not measured

Course type

Not stated

Field size

Unknown

Boston qualifier

Course map

Not yet published

Elevation profile

Not measured

Accessibility & inclusion

Walker-friendly

Stroller-friendly

Dog-friendly

Kids race

Vibe & community

We don't have vibe tags for this race yet — organizers can claim the listing to add them.

No charity partner listed.

History & past results

Years running

Unknown — claim to add

Recurrence

Annual (assumed)

Past finisher times and year-over-year participation will appear here once the organizer publishes them.

Reviews

No reviews yet

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Common questions

How hard is the Three Creeks Half Marathon Half Marathon?

We don't have a verified elevation profile yet — check the organizer's course map for the climb breakdown.

What should I wear?

Dress for ~10°F warmer than the standing temperature once you start running. Throwaway long-sleeve at the start, gloves and a hat for sub-50°F mornings, singlet plus visor when it climbs above 60°F. The race-day forecast above is the source of truth closer to the date.