THANK YOU to our sponsor Avery Brewing, who provides the great Avery beer for our post-race barbecue!  And to Succeed for providing S! Caps for our aid stations.  And to Runners Roost for our bib numbers and start/finish banners.

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

Current News

Photo by Derya Senol.

North Fork Trail Race

The 2016 race is now in the books!  It was a beautiful day that saw lots of great performances.  Here are the results:

Split times from aid stations will be added shortly.

THANK YOU to the 80+ volunteers who made this race happen for the runners--the incredible aid station crews, the aid station support people who drove many miles to the remote aid stations, the crossing monitors out on FS 550, and the folks who worked tirelessly at the start/finish from 5:30 a.m. to 9:30 p.m.  We will again be making generous donations to the North Fork Volunteer Fire Department, who provided our medical support, and Conifer StageDoor Theatre, who presented the fabulous barbecue.

The 2017 race will be June 3.  Put it on your calendar, and look for registration to open in January.