Colorado 13er (Half Marathon/10k/5k)
- Date
- June 6, 2027
- Location
- 1200 Dillon Road, Louisville, CO
- Distance
- 5K · 10K · Half Marathon
- Price
- $30–$60
From the Organizer
The Colorado 13er is THE event where the best parts of trail running and road racing combine to create a truly enjoyable, kind-to-your-body, well-supported 13.1 race!
Seasoned runners and first-timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.
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Join us for this exceptionally scenic, looped 13.1 course which runs through gorgeous Louisville, Colorado!
We designed this course so that you can enjoy all of the spectacular views of the Flatirons that Colorado has to offer. Come see for yourself!
Groups/Teams/Families: Save $5 per person for groups of 5 or more! See our FAQ page for more questions!
Click the drop-down menu under "race info" for all race details! Any questions, please email us at info@colorado13er.com
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Here's the good stuff!!
- 10 water station passes
- 5 port-a-john passes
- 9 miles of FLAT, crushed gravel
- nearby, free parking
- spectator friendly
- 13.1 finisher medal
- 10k or 5k options available
- iced towels at the finish line
- gender-specific performance tees for every registrant
- chip timed with texted results
- live, real-time results posted online
- 13.1 miles of million-dollar views AND
- the amazing sense of accomplishment you can only get from running 13.1! (or 5k or 10k!)
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
79°
Typical Low
49°
Chance of Rain
37%
Based on US Climate Normals data from Boulder, 6 mi from the venue.
Host City
About Louisville, CO
Population
20,788
as of 2023
City Elevation
5,387 ft
Nearest Airport
BJC
Rocky Mountain Metropolitan Airport · 4 mi
Major Hub
DEN
Denver International Airport · 26 mi
Time Zone
Mountain Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Colorado 13er (Half Marathon/10k/5k), put it on the calendar, and turn “someday” into a start date.
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Days to train
- Race
- Colorado 13er (Half Marathon/10k/5k)
- Date
- June 6, 2027
- Location
- 1200 Dillon Road, Louisville, CO
Coming Up
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1 mile away
BRR All-Comers Summer Track & Field Series #3
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From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
- What is the Colorado 13er (Half Marathon/10k/5k)?
- Colorado 13er (Half Marathon/10k/5k) is a running race held in Louisville, Colorado on June 6, 2027. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the Colorado 13er (Half Marathon/10k/5k)?
- Sunday, June 6, 2027 in Louisville, Colorado at 1200 Dillon Road. Check the event page for exact start times and wave schedules.
- How do I register for the Colorado 13er (Half Marathon/10k/5k)?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
Colorado 13er (Half Marathon/10k/5k)
Jun 6, 2027