Platte River Half-Marathon, Relay & 5k
- Date
- April 11, 2027
- Distance
- 5K · Half Marathon
- Price
- $40–$155
From the Organizer
Welcome to the Platte River Half Marathon, Relay & 5k race, one of the most exciting and popular races in the Denver Metro Area! This race is held annually in Littleton, CO. We’re thrilled to announce that registration for our upcoming 2027 event on Sunday, April 11th is open for the half-marathon and relay race. The race starts and finishes next to the beautiful Platte River Trail and adjacent to the popular Breckenridge Brewery campus. Join us for an epic post-race party at the Brewery with food, vendors, live music, and of course beer!
Whether you’re an experienced runner looking to set a new PR, a newcomer looking to tackle your first half-marathon, or a team of runners wanting to run an exciting relay race, join us for a day of adrenaline-pumping running, scenic views, and all-around fun. What’s more, we donate a portion of the proceeds to Salute Colorado. Thank you for your support, and we can’t wait to see you at the finish line!
Questions? Visit our race website here.
Entry fees are non-refundable and non-transferable. There are no deferrals to future years.
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
59°
Typical Low
33°
Chance of Rain
23%
Based on US Climate Normals data from Marston Fltr Plt, 4 mi from the venue.
Host City
About Littleton, CO
Population
45,092
as of 2023
City Elevation
5,445 ft
Nearest Airport
BJC
Rocky Mountain Metropolitan Airport · 24 mi
Major Hub
DEN
Denver International Airport · 28 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 Platte River Half-Marathon, Relay & 5k, put it on the calendar, and turn “someday” into a start date.
298
Days to train
- Race
- Platte River Half-Marathon, Relay & 5k
- Date
- April 11, 2027
Coming Up
More Running races near Littleton, CO
Before The Fourth 5k
5K · From $45 · 7306 W Bowles Ave
3 miles away
Heritage Eagles 5K
5K · From $30 · 1401 W Geddes Ave
1 mile away
Shootout for Soldiers Colorado
6147 S Gallup St
1 mile away
Pancake Stampede 5K
5K · From $20 · 6115 S Santa Fe Drive
Less than a mile away
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 Platte River Half-Marathon, Relay & 5k?
- Platte River Half-Marathon, Relay & 5k is a running race held in Littleton, Colorado on April 11, 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 Platte River Half-Marathon, Relay & 5k?
- Sunday, April 11, 2027 in Littleton, Colorado at 6745 S. Santa Fe Dr.. Check the event page for exact start times and wave schedules.
- How do I register for the Platte River Half-Marathon, Relay & 5k?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
Platte River Half-Marathon, Relay & 5k
Apr 11, 2027