“More Challenging, More Wild, More Ultra” 

The Grand-Daddy of all the Human Potential Running Series Races, The Silverheels 100. Put on your dancing shoes and bring everything you’ve got in you to tackle this monster of a 100 miler. A true mountain hundred with long climbs and descents, spanning the Colorado High Country, Silverheels will challenge you in ways Colorado hundreds should.

Our large out-and-back course sends runners to abandoned gold mines, over a high mountain ridge at two locations all while traversing singletrack trails and ATV roads at an average elevation of 11,000’.

Finish the Silverheels 100 and receive the coveted Silverheels Buckle!

Race Overview

Date: August 5-6, 2017
Distances: 103 Miles
Average Elevation: 10,900′
Gain/Loss: +18,170’ / -18,170’
Start Time: 4:00 AM
Time Limit: 36 Hours
Location: Fairplay, CO
CLICK HERE for a more detailed course report file. 


Entry Fees:
December 1, 2016 – December 3, 2016: $225
December 4, 2016 – February 28, 2017: $275
March 1, 2017 – July 24, 2017: $300

HPRS Members Enjoy 10% Off Registration Fees!


Qualifying Standards: Entrants must be at least 18 years old, and must have completed one of the qualifying standards below in order to enter into the race. The qualifier must have been completed on or after August 1, 2015.

• Successful Completion of any Official 100 Mile (or longer) Race

• Successful Completion of any 100k in less than 14 Hours -or- successful completion of one of the following: Barkley Fun Run, Hellgate, Never Summer, Tushar, Kat’cina Mosa, Fuego Y Agua, Cloudsplitter, Uwharrie, Peacock Flats, The Canyons.

• Successful Completion of any 50 Miler in less than 11 Hours -or- successful completion of the following: Manitou Revenge, Cruel Jewel, H9, Devil’s Backbone, Twin Peaks 50, Wapack and Back, Jemez Mountain, Zane Grey, San Juan Solstice, Squamish, Skyline Mountain, Iron Legs, Virgil Crest, Quadrock, Sheep Mountain.

• We accept 24/48/72 Hour Events as Qualifiers on a case by case basis. Contact us for more info.
Generally… you must complete the following distances in regards to the above times to be considered:
24 Hours = 100 Miles,   48 Hours = 150 Miles,   72 Hours = 200 Miles 

• Fat Ass Runs do NOT count as qualifiers. Qualifiers must be official races with an entry fee, time limit, required course, website, and official results. You must finish the distance you signed up at the qualifying event (dropping to the 50 Mile from 100 Mile would not count). You may not use any race you DNF’d regardless of the number of miles run.

Runner Volunteer Requirement: All registered runners must complete 8 hours of Volunteer Trail Work with a recognized organization, or 8 hours of Volunteer Work at any other Ultramarathon. The volunteer requirement must be completed between July 4, 2016 and July 4, 2017.

Volunteer Service Requirement Form  <– (You MUST Download This and Complete it!)

If you wish to by-pass this requirement, you have an opportunity to do so by writing a check for $150 to “South Park Schools Foundation” and mail that check to:

Human Potential LLC
2230 E 126th Way
Thornton, CO 80241


UTMB/ITRA: This race has been evaluated and certified by the International TrailRunning Association. It is a UTMB Qualifier worth 6 Points.

Comparing Silverheels to other United States 100s

Course: The course begins an ends at Cohen Park located in Fairplay, CO. Runners will negotiate Dirt and Gravel Roads, Single track trail, and remote trails of the Pike National Forest/South Park Ranger District. Runners will negotiate these trails and roads at elevations between 9,000 and 12,500′.

Aid Stations: Runners will access 9 aid locations with a total of 22 stops. Each aid station will be fully stocked with water, electrolyte drink, and assorted “Ultra” snacks. There are a few stations that are water only. Please see our Aid Stations chart for more details.

Crews and Pacers: Due to access difficulty in the area, there will be crew access at ONLY Five (5) aid station locations. Crews can tend to their runners nine (9) times on the course between these five stations. Note: Two of these crew accessible spots are hike in only. Please plan accordingly.

Pacers are allowed to join their runners at the following aid stations only: Miles 56.5, 65.5, 81,

Parking: All runners and spectators must park at the designated parking locations ONLY. We ask that you NOT park on Main Street, Front Street or 4th Street in Fairplay. PLEASE ONLY PARK IN DESIGNATED AREAS. A map of these areas will be available closer to the race.

Pre-Race Check in: Packet and bib number Pick-Up will take place from 6-8pm at Fairplay Town Hall on Friday Night;  All runners must check-in with race staff the morning of the run by 3:45AM. Runners not checked in by 3:45 AM will not be scored as official runners of the event.

Pre-Race Briefing: Friday Evening TBA

Post-Race Celebration: There will be a post race gathering at Cohen Park. We’ll welcome all of our runners to the finish line with food and drink.

Awards: All official finishers will receive a Silverheels 100 Belt Buckle. We’ll also present special awards to DFL, Best Blood and a few surprise awards as well.


Permits: This event is being held in accordance with permits from the U.S. Forest Service, Pike National Forest – South Park Ranger District, Park County, The City of Fairplay, and permission from our local private land owners. We ask that you please respect and care for the land this event is held on to help ensure the future of this race and to limit our environmental impact.

Any additional race information, changes, and updates will be sent to registered entrants ONLY via e-mail communication.

PLEASE NOTE: The Silverheels 100-Mile Endurance Run takes place in a delicate mountain environment. The route utilizes a variety of properties owned and/or managed by Park County, The Town of Fairplay, The United States Forest Service, and numerous Private Land Owners. All of these relationships, especially those with private land owners, are also delicate in nature. Simply put, it is not our right to hold this race, it is a privilege. While we welcome and encourage you to train on the course, we ask that you please be careful to only utilize the course via the route which has been fully approved by all parties. NEVER travel onto private property and be respectful of all private lands. Leave it better than you found it and above all else, leave no trace, take only pictures. Those who so choose to use unapproved private lands will be swiftly banned from any and all HPRS events for LIFE.

Join us and challenge yourself, discover your Human Potential