11Apr
Half Marathon
Running
- Distance
- 21.1K
- Start time
- 07:00
- Entry fee
- $70.00
Platte River Half-Marathon, Relay & 5k
Littleton,
Colorado,
United States
151 days left
runsignup.com
Date
11 Apr, 2027
Races
3 distances
Entry fee
$40.00 – $155.00
Runner rating
Be the first to rate
Website
Official website
Platte River Half-Marathon, Relay & 5k
About the event
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.
Races offered
11Apr
Half Marathon Relay
Running
- Distance
- 21.1K
- Start time
- 07:00
- Entry fee
- $155.00
11Apr
5k
Running
- Distance
- 5K
- Start time
- 07:15
- Entry fee
- $40.00
Weather history
3-year monthly averages for April in Littleton.
Temperature0.9° / 17.0°
Feels like-3.4° / 12.5°
Sunshine hours10h 31m
Rainfall1.4 mm
Snowfall8.5 cm
Wind9.5 km/h (Light breeze)
Humidity48.9%
Max UV indexModerate (5.0)
Sweat lossLow
Course conditionsSnow and ice expected
Sunrise06:20
Sunset19:38
About Littleton
Learn more about the host city, Littleton.
Littleton is a city of about 45,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The seat of Arapahoe County and also extending into adjacent Arapahoe and Douglas counties, the city lies south of Denver along the South Platte River. A former farming community, Littleton is now a residential suburb of Denver.
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Things to do nearby
Tours and activities near Littleton, powered by Viator.
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