Ralston Creek Half Marathon & 5k
Ralston Creek Half Marathon & 5k is a running race on February 14, 2027 in Arvada, CO, with entry fees from $25 to $125.
- Date
- February 14, 2027 (168 days to go)
- Location
- 6542 Fig Street, Arvada, CO
- Price
- $25–$125
- Sport
- Running
From the Organizer
The Ralston Creek races feature a fun winter half-marathon and 5K run conveniently located on the west side of the Denver Metro Area in Arvada, Colorado. The courses cover a scenic mix of road and bike path over rolling terrain, and an optional early start time for half-marathon runners who expect to take more than 2 hours 45 minutes to complete the course!
Half-Marathon entry is limited to the first 650 registrations. 5K registration is limited to the first 350 entries. Once a distance has filled, we cannot accept any additional entries for that distance.
Your entry fee includes entry into the race, a finisher's medal (for half-marathon runners who complete the course), FREE race photo downloads, fun music, hot cocoa and tasty quesadillas fresh off the grill!!!
Long sleeve adult tech shirts will be included with all half marathon entries. 5k entries will come with a short sleeve t-shirt or an upgrade to a long sleeve tech shirt for $5.
This is also the final race in the Racing Underground Winter Running Series. The three-race series includes the Stocking Run 5K in December, the Yeti Chase 5K/10K in January, and the Ralston Creek Half-Marathon & 5K in February. Choose from the 5K-5K-5K series or the 5K-10K-Half Marathon Series.
WINTER RUNNING SERIES
Series Finisher Awards to all runners who finish all three series races, and Overall Awards to the top series finisher in each age category!
December 12, 2026: Superior Stocking Run 5K (Superior, Colorado)
January 24, 2027: Yeti Chase 5K/10K (Lakewood, Colorado)
February 14, 2027: Ralston Creek Half Marathon & 5K (Arvada, Colorado)
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
48°
Typical Low
18°
Chance of Rain
20%
Based on US Climate Normals data from Wheat Ridge 2, 4 mi from the venue.
Host City
About Arvada, CO
Population
122,835
as of 2023
City Elevation
5,479 ft
Nearest Airport
DEN
Denver International Airport · 23 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 Ralston Creek Half Marathon & 5k, put it on the calendar, and turn “someday” into a start date.
168
Days to train
- Race
- Ralston Creek Half Marathon & 5k
- Date
- February 14, 2027
- Location
- 6542 Fig Street, Arvada, CO
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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 an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
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Frequently Asked Questions
What is the Ralston Creek Half Marathon & 5k?
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Ralston Creek Half Marathon & 5k
Feb 14, 2027