Ralston Creek Half Marathon & 5k
RU
From Racing Underground
- Date Sun 15th February 2026
- Time 9:00AM MST
- Location Arvada, Colorado
- Price $27.50 - $175.90
- Races 5 races
- Distances 5km, Half Marathon, 10km
Event summary
Get ready for an exciting winter running experience at the Ralston Creek Half Marathon & 5K, hosted by Racing Underground on Sunday, February 15, 2026! Located in the picturesque city of Arvada, Jefferson, this event showcases a scenic course that winds through a delightful mix of road and bike paths over rolling terrain. Participants can choose between a challenging half marathon or a fun 5K, with the half marathon entry limited to the first 650 registrants and the 5K capped at 350 entries.
All runners will enjoy a fantastic race day experience that includes finisher's medals for half marathon participants, complimentary race photo downloads, lively music, and delicious post-race treats like hot cocoa and mouthwatering quesadillas. Don’t miss out on the festive atmosphere at the nearby Colorado Tap House, where showing your race bib on race day earns you $2 off any beverage. This event is the grand finale of the Racing Underground Winter Running Series, which also features the Stocking Run 5K and Yeti Chase 5K/10K. Whether you're a seasoned runner or a first-time participant, join us for a memorable day of fitness, fun, and community spirit!
All runners will enjoy a fantastic race day experience that includes finisher's medals for half marathon participants, complimentary race photo downloads, lively music, and delicious post-race treats like hot cocoa and mouthwatering quesadillas. Don’t miss out on the festive atmosphere at the nearby Colorado Tap House, where showing your race bib on race day earns you $2 off any beverage. This event is the grand finale of the Racing Underground Winter Running Series, which also features the Stocking Run 5K and Yeti Chase 5K/10K. Whether you're a seasoned runner or a first-time participant, join us for a memorable day of fitness, fun, and community spirit!
Organiser's Description
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.
_THE POST-RACE FESTIVITIES WILL CONTINUE AT THE NEARBY COLORADO TAP HOUSE [https://www.coloradotaphouse.com] LOCATED JUST ABOVE OUR 2 & 11 MILE AID STATION ON RALSTON CREEK TRAIL (14982 W.69TH AVE BY CAR) WHERE YOU CAN SHOW YOU RACE BIB ANY TIME ON RACE DAY AND RECEIVE $2 OFF A BEVERAGE ITEM OF YOUR CHOICE. WITH 30 TAPS THERE ARE PLENTY OF BEER OPTIONS, BUT ALSO CIDER, SELTZER, WINE AND COCKTAILS. THEY SERVE COFFEE DRINKS, KOMBUCHA, CBD CIDER, TOMMYKNOCKER N/A BEER, ROOT BEER AND SOFT DRINKS. THEY ALSO SERVE SMALL FOOD ITEMS AND THE FOOD TRUCK OF THE DAY ROLLS UP AT NOON! _
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 13, 2025: SUPERIOR STOCKING RUN 5K (Superior, Colorado)
JANUARY 25, 2026: YETI CHASE 5K/10K (Lakewood, Colorado)
FEBRUARY 15, 2026: RALSTON CREEK HALF MARATHON & 5K (Arvada, Colorado)
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.
_THE POST-RACE FESTIVITIES WILL CONTINUE AT THE NEARBY COLORADO TAP HOUSE [https://www.coloradotaphouse.com] LOCATED JUST ABOVE OUR 2 & 11 MILE AID STATION ON RALSTON CREEK TRAIL (14982 W.69TH AVE BY CAR) WHERE YOU CAN SHOW YOU RACE BIB ANY TIME ON RACE DAY AND RECEIVE $2 OFF A BEVERAGE ITEM OF YOUR CHOICE. WITH 30 TAPS THERE ARE PLENTY OF BEER OPTIONS, BUT ALSO CIDER, SELTZER, WINE AND COCKTAILS. THEY SERVE COFFEE DRINKS, KOMBUCHA, CBD CIDER, TOMMYKNOCKER N/A BEER, ROOT BEER AND SOFT DRINKS. THEY ALSO SERVE SMALL FOOD ITEMS AND THE FOOD TRUCK OF THE DAY ROLLS UP AT NOON! _
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 13, 2025: SUPERIOR STOCKING RUN 5K (Superior, Colorado)
JANUARY 25, 2026: YETI CHASE 5K/10K (Lakewood, Colorado)
FEBRUARY 15, 2026: RALSTON CREEK HALF MARATHON & 5K (Arvada, Colorado)
Races
-
Half Marathon
Incl. $5.50 Fee & Select Your Shirt Size
Sun 15th February 2026 (9:00AM MST)
$80.50
-
5k Run
Incl. $3.10 Fee & Select Your Shirt Size
Sun 15th February 2026 (10:00AM MST)
$38.10
-
5k Youth Entry
Incl. $2.50 Fee & Select Your Shirt Size
Sun 15th February 2026 (10:00AM MST)
$27.50
-
5K-5K-5K Winter Run Series
Incl. $7.90 Fee & Select Your Shirt Size
Sun 15th February 2026 (10:00AM MST)
$122.90
CLOSEDSeries entry gets you into all three Winter Series events: December 14 - Superior Stocking Run 5k January 26 - Yeti Chase 5k February 16 - Ralston Creek 5k -
5k-10k-Half Winter Run Series
Incl. $10.90 Fee & Select Your Shirt Size
Sun 15th February 2026 (9:00AM MST)
$175.90
CLOSEDSeries entry gets you into all three Winter Series events: December 14 - Superior Stocking Run 5k January 26 - Yeti Chase 10k February 16 - Ralston Creek Half Marathon
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6542 Fig Street, Arvada, 80004, CO, United States
Ralston Creek Half Marathon & 5k
