Series Events
Dates, Times, Directions

Points & Awards
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Welcome to the 2023 - 2024 Series!

Series Finisher Awards to all runners who finish all three series races!!!

The Racing Underground Winter Running Series brings you three amazing runs at three unique venues! The races are geared toward all ability levels, with a family-friendly atmosphere, discounted youth entries, free professional race photo downloads, and $2,250 total series prize money for the top finishers!

Participate in one event, or race all three! Discounted series entries are available for both the 5K-5K-5K series or the 5K-10K-Half Marathon series, and inexpensive youth (age 12 & under) entry fees are offered for all 5K runs!

Each race features gender specific technical running shirts and youth 50/50 T's, tasty post race food, steaming hot cocoa, and Jill's world famous home baked banana chocolate chip bread!!!

We hope to see you at the ninth edition of the Racing Underground Winter Running Series!

Darrin, Jill,and the Racing Underground Crew

Series Events

Superior Stocking Run 5k
December 3, 2023
Purple Park - Superior, CO
9:00am Start Time

Early Packet Pickup:
Runners Roost Louisville

The series kicks off with the Superior Stocking Run, a festive 5K in the town of Superior on December 3rd. The race is limited to 1,000 entrants, and all finishers will receive a Stocking Run finisher medal that doubles as a Christmas tree ornament. How fun is that!

Yeti Chase 5k & 10k
January 28, 2024
Bear Creek Lake Park
Lakewood, CO

10:00am Start Time

Early Packet Pickup:
Runners Roost Lakewood

Race number two is the popular Yeti Chase 5K & 10K at Bear Creek Lake Park in Lakewood on January 28th. This is the 14th year for the Yeti Chase, and it has sold out well before race day in all previous years. After chasing down the Yeti, runners wander the park's 2,500 acres, known for its diverse bird and waterfowl population as well as stunning views of the foothills.

Ralston Creek
Half Marathon & 5k

February 18, 2024
Arvada, CO
9:00am Start Time

Early Packet Pickup:
Runners Roost Lakewood

The series finale comes at the Ralston Creek Half-Marathon & 5K in Arvada on February 18th. The Ralston Creek Half-Marathon has sold-out in all previous years, establishing itself as Colorado's premier winter half marathon. The Ralston Creek 5K Run round's out our 5K series, with a flat and fast course! Both race courses follow a scenic mix of road and bike path through Arvada's beautiful west side.

Registration & Entry Fees

Your entry into the Racing Underground Winter Running Series includes a spot on the start line at all three races, three well marked and marshaled courses, fast and accurate chip timing with live online results, printable finisher certificates & personal finish line videos (weather permitting), three unique gender-specific tech shirts, tasty food, and lots of fun!


Click button to register
online for the

Select SERIES option
on the
Stocking Run
Registration Page

To register for one or more series events separately, click the links below.

Series Results

2019-2020 Series Standings

2020 Ralston Creek Half Marathon & 5k
2020 Yeti Chase 5k & 10k
2019 Superior Stocking Run 5k

2018-2019 Series Standings

2019 Ralston Creek Half Marathon & 5k
2019 Yeti Chase 5k & 10k
2018 Superior Stocking Run 5k

2017-2018 Series Standings

2018 Ralston Creek Half Marathon & 5k
2018 Yeti Chase 5k & 10k
2017 Superior Stocking Run 5k

2016-2017 Series Standings

2017 Ralston Creek Half Marathon & 5k
2017 Yeti Chase 5k & 10k
2016 Superior Stocking Run 5k

2015-2016 Series Standings

2016 Ralston Creek Half Marathon & 5k
2016 Yeti Chase 5k & 10k
2015 Superior Stocking Run 5k

2014-2015 Series Standings

2015 Ralston Creek Half Marathon & 5k
2015 Yeti Chase 5k & 10k
2014 Superior Stocking Run 5k

2013-2014 Series Standings

2014 Ralston Creek Half Marathon & 5k
2014 Yeti Chase 5k & 10k
2013 Superior Stocking Run 5k

2012-2013 Series Standings

2013 Ralston Creek Half Marathon & 5k
2013 Yeti Chase 5k & 10k
2012 Superior Stocking Run 5k
2012 Ralston Creek Half Marathon
2012 Yeti Chase 5k & 10k
2011 Yeti Chase 5k & 10k


Series Sponsors

Runners Roost Lakewood