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Experience the spring-fed meadows, massive rocks of Pikes Peak granite, and sweeping views of Colorado’s most spectacular mountains in the Great Divide Ultras. This Colorado early season 100m, 100k, 50k and 25k trail ultra takes place entirely on the beautiful rolling meadows of Mueller State Park. The beautiful looped course is 100% smooth single/double-track trail.
As a part of the Great Divide Ultras running festival, we have added the Dark Divide Night Run! This night run begins at 8:00PM as the sun is setting on Saturday June 1st. This incredible run offers runners an opportunity to share the trail with the 100mile/100k runners and to practice running through the night.



Race Information:

Saturday June 1st: 100M, 100K, 50K and 25K

Sunday, June 2nd: 50K and 25K

Race Day Schedule:

Saturday, June 1st-

5:15 AM: Packet Pickup Begins

6:00 AM: 100m/100K Start

7:00 AM: 50K/25K Start

8:00 PM: Dark Divide Night Run 50k/25k Start

Sunday, June 2nd-

6:00AM: Packet Pickup begins for the Sunday races

7:00AM: 50K/25K Start

6:00 PM: Course Closes

Maps, Elevation Profiles, Aid Station Charts: 
All aid stations are crew accessible and allow for drop bags. All runners will begin the first loop in a clockwise direction. Each consecutive loop is run in the opposite direction of the previous loop.

100 Mile: Elevation Gain: 16,071'
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The Great Divide Ultra 100 Mile is the first 100 miler on the Colorado calendar. This is a great ultra for seasoned and beginner runners. The smooth non-technical 14.8m looped course offers incredible views! The aid stations will be well stocked, are easily accessible by crew and are within close proximity to the previous aid station. 

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-The scenic 100 mile course consists of six 14.8m loops and one 10.5m loop (see maps above).

-Generous 36 Hour Cutoff

-Aid station distance ranging from 4.3-6.1 miles.

-Elevation Range: 9,189' - 9,743'

-All aid stations are crew accessible

-All aid stations allow drop bags

100k/50k/25k Course Map
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-The 100k/50k/25k consist of a 15.5 mile loops.
      -100k = 4 Loops
      -50k = 2 Loops
      -25k = 1 Loop
-Aid station distance ranges from 4.3-6.1 miles.​​
-Elevation Range: 9,189' - 9,743'
-All aid stations are crew accessible and allow drop bags.


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100K: Elevation Gain 10,104'

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50K: Elevation Gain 5,052'

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25K: Elevation Gain 2,526'

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All aid stations will be well stocked with Tailwind, Muir Energy Gels, sweet and salty snacks, fruit, sandwiches, and soda. The Hart-Lee Homestead Aid Station will also be cooking bacon, quesadillas, potatoes and other warm options!

Pack Pickup:

  • Friday, May 31st

    • 4:00 PM- 6:00 PM

    • Location: Colorado GearLab

      • 108 W Midland Ave, Woodland Park​

    • 6:00 PM-6:30 PM: Recommended pre-race meeting for 100 mile and 100k

  • Saturday- Beginning at 5:15AM @ Start/Finish Line

  • Sunday- Beginning at 6:00AM @ Start/Finish Line

Registration: closes on May 30th. All registrations include;​

  • Gender Specific race shirt

  • BOCO Trucker Hat

  • Personalized bib and finishers' award

  • Belt Buckle for 100m/100k finishers

  • Well stocked aid stations

  • Beautiful and easy to follow course

  • Post-race meal

Register online via Ultrasignup

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Event Information

The weather in Divide, Colorado at the end of May can be varied and and unpredictable. That being said, the weather is generally very pleasant running weather with the average temperature ranging from the mid 60s as the high and the mid 40s as the low. 

Recommended Gear: 
Prepare and expect for varied and unpredictable weather! Runners in the 100 mile and 100K should prepare for the temperatures to be colder during the overnight hours. There is always a possibility of rain or snow and runners should plan accordingly. Fortunately, the course is easily accessible to emergency vehicles and the aid stations are relatively close to one another. Please feel free to email us for specific gear recommendations. 

Crew and Pacing: 
Ultra running is a community sport and we encourage crew and pacers! All distances are allowed crew and are able to access their runners at the Livery (start/finish) and Hart-Lee Homestead aid stations. Each runner will be given one crew pass. This pass must be on display when parked in the Grouse Mt. parking lot for the Hart-Lee Homestead aid station. 

Pacing is only allowed for the 100 mile and 100k. 100k runners are allowed a pacer on the last lap or after sunset (8:15PM). 100 mile runners are allowed a pacer at mile 44.4 (Livery aid station). Runners are allowed as many pacers as they like, but only one at a time.


Crew Accessible Aid Stations:

The looped course offers crew convenient access to their runners.

Livery Aid Station is located at the start/finish line and main parking lot.

Hart-Lee Aid Station


Colorado Springs: Head west on Highway 24 for 25 miles then turn left on CO Highway 67 South. Continue for 3.8 miles and then turn right into Mueller State Park. Parking for the event will be 1.5 miles along the main road on the right. On the morning of the race, all runners will be greeted at the entrance of Mueller State Park and directed towards parking. 

Parking will be located in the Livery/Equestrian and nearby parking lots. All runners will be directed to the appropriate lot. To allow the longer distance runners (100m, 100k) to have access to their vehicles during the race, these runners will be given priority to park in the Livery/Equestrian parking lot. The parking is limited and we ask that runners carpool when possible. 

Travel and Lodging:


Colorado Springs Municipal Airport: Colorado Springs has the closest and most convenient airport. It takes about 55 minutes to drive from the airport to the event. 


Denver International Airport: The Denver airport is not as close as the Colorado Springs airport, but will usually offer better flight options and be less expensive. It takes about 2 hours to drive from the airport to the event. 


Mueller State Park offers 132 campsites and are by reservation only. The various campsites can accommodate walk-in tent campers to full hook-up RVs. There are cabins available to rent within the park. Free dispersement camping is available approximately 20-30 minutes from Mueller State Park.


Things to See and Do


  • Devil’s Playground (664A) to Northwest summit of Pikes Peak: This approximately 14 mile out and back summit of Pikes Peak is one of the most spectacular trails in the Front Range. The summit to “America’s Mountain” is significantly less crowded than Barr Trail and offers spectacular views of the Great Divide course. 


  • The Crags Trail (664): This 4.5 mile out-and-back is popular with families and offers incredible views of Pikes Peak and the Great Divide course! The magnificent rock formations at the turnaround are uniquely stunning and definitely worth the trip.


  • Bierwerks: Located in Woodland Park. Although Bierwerks specializes in German beers, they have a wide variety of delicious beer. There is usually a couple of food trucks serving lunch and dinner. Indoor and outdoor seating is available. 

  • Paradox Brewing: Located in Divide. Overlooking Pikes Peak, Paradox specializes in sour beers! They offer indoor and outdoor seating. 

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