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Racing Underground brings you an amazing half marathon this spring! The Three Creeks Half Marathon features a half marathon course that is flat, fast and scenic!

Travel on foot through some of the most beautiful parts of Cherry Creek State Park, with a total combined elevation gain of only 291 feet spread out over 13.1 miles as the course follows the banks of Cherry Creek, Windmill Creek, and Cottonwood Creek on a mix of road, paved running trail, and wide dirt trails.

We hope to see you at the 11th annual Three Creeks Half this April!

BACK IN 2025 - 2-person Half Marathon Relay!!! Each team member runs half of the course. The exchange zone is at the 6.5 mile aid station. A shuttle van will transport all runners who are running the second half of the course to the exchange zone and will drive all first half runners back to the start/finish line. All team members will receive a race shirt, free race photo downloads, a tasty pancake breakfast, and a finisher medal with the option to have the back engraved for free! Awards will be presented to the first place male, female, and co-ed teams. For planning purposes, the second half of the course has slightly more uphill than the first.

• Early Packet Pickup will be held at Runners Roost Lakewood on Friday April 11th from noon until 6:30pm.
• Race Day Packet Pickup will take place in the start/finish area at Hobie Hill starting at 6:15am. There will be a bag check located near the registration tent and the start/finish line. This will save you the need to walk back and forth to your car.

Awards: Cash Awards in the amount of $200, $150, and $100 will be presented to the top-3 overall male and female finishers. Top-3 overall will be determined by the gun time - the first three men and women to cross the finish line will win the prize money. Overall prize money winners will be removed from their respective age categories.

Age Group Awards will be determined by net (aka chip) time (your time starts when you cross the start line timing mat and ends when you cross the finish line timing mat). Awards will be presented to the top-3 finishers in the following categories: Ages 19 & under, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, and 80+ as well as the top-3 overall non-binary finishers.

Course: Click Here to view the course map
The course follows an equal mix of wide and smooth dirt running trails, winding paved running paths, and paved roads through the most scenic sections of Cherry Creek State Park.

Eight aid stations with water and Skratch will be available approximately every 2 miles. Gels will be available at miles 6.5 and 10.

The course is as flat as it is scenic, with a total elevation gain of just 291 feet spread out over the 13.1 mile course. You will follow the banks of Cherry Creek, Windmill Creek, and Cottonwood Creek.

Toilets will be available at the start/finish and on course at approximately 0.75 miles, 2 miles, 8.5 miles, and 10.5 miles.

Directions: Parking will take place at Cherry Creek High School, and we have rented the school's south lot for race parking. Participants may park in the south lot ONLY on race morning. No racer parking will be allowed inside the park or in any of the other high school parking lots. Cherry Creek High School will be hosting other events on race day, so please be sure to park in the South Lot Only. The SOUTH LOT is located off Yosemite street, a half mile north of Bellevue.

From I-25, take exit 199 (the Bellevue exit), then turn east on Bellevue. Drive one mile east on Bellevue, then turn left onto Yosemite. In approximately 0.5 miles you will turn right onto Campus Drive and follow signs to race parking.

Bag-Check: There will be a bag check located near the registration tent and the start/finish line. This will save you the need to walk back and forth to your car.

Lodging: Here is some suggested lodging near Cherry Creek State Park.

• La Quinta Denver Englewood Tech Center (3.2 miles to race parking)
• La Quinta Denver Tech Center (3.7 miles to race parking)
• Look for hotels in the Denver Tech Center on Expedia.com

Most questions are answered right here on the race website. If you can't find the answer here, please feel free to email or call us!

Email: to darrin@racingunderground.com

Phone: 303.642.7917 (this is a home phone - Call between 8am and 8pm only, please!)

Volunteering: If you would like to volunteer for a race, we would love to talk with you! Just send an email to darrin@racingunderground.com and Jill will get right back with you. Volunteers will receive a free entry into one of our other events (or a half-price entry into the Blue Sky Ascent (previously known as the Mt. Evans Ascent). (

Other Great Events: Check out our website at www.RacingUnderground.com to learn about our other exciting running and multisport events!

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