North Fork Trail Race

Photo by Derya Senol.

The 50 Mile and 50K are 100% trails, mostly single track and some double, in the beautiful Buffalo Creek Recreation Area in the Pike National Forest, starting and finishing along the rushing North Fork of the South Platte River in Pine Valley Ranch Park in Pine, Colorado.  The elevation ranges from 6,700 feet to 8,100 feet in the 50K and to 8,400 feet in the 50 Mile.  With 4,800 feet of climb in the 50K and 7,500 feet of climb in the 50 Mile, the race is very challenging for those not used to mountain trail races, yet speedsters who are used to altitude will find the course quite runnable.

The race benefits the North Fork Volunteer Fire Department, which protects the area where the race is run.  They have helped to battle a number of wildfires in the area in recent years that have changed the landscape, opening broad vistas of the high country and making way for new growth.  You will run through some of the burn areas, but most of the course is in pristine pine and aspen forest.  The beautiful scenery, friendly aid stations and generous time cutoffs make North Fork an excellent choice for first-time ultramarathoners as well as veterans. .  Runners get high quality tech T-shirts, unique finisher awards, a fabulous post-race barbecue and the satisfaction of a job well done.

Part of the proceeds are also donated to StageDoor Theatre in Conifer, which brings great entertainment to the local community and provides theater education and opportunity to area youth.  StageDoor volunteers will be presenting the barbecue on race day.

Check out the photo galleries on the Photos page.  And all the course and race information can be found under the Races tab above.  If you have questions, feel free to email the race director at or call 303-903-3533.

In the Mountains
Just 40 Miles
Southwest of Denver

The Race

50 Mile/50K June 4, 2016, 7:00 a.m. - Pine, Colorado

Registration  for 2016 is now open on UltraSignup.

The 2016 course will be the same as the past two years.  See the narrative description, map and turn sheets on the Course page. Complete race information can be found on the Race Info page.

Entry fees will be $90 for 50K and $100 for 50 miles, plus an additional $15 beginning April 1 (the race has been filling well before that).  ENTRY FEES ARE NON-REFUNDABLE, NON-TRANSFERABLE AND CANNOT BE ROLLED TO THE FOLLOWING YEAR.  See the Registration page for details on this policy.  275 entries will be accepted, and there will be no wait list.

Sign up on January 5, and come join us on June 4!

Current News

THANK YOU to our new sponsor Avery Brewing, who provided the great Avery IPA and White Rascal for our post-race barbecue!.