North Fork Trail Races

50 Mile/50K June 27, 2015, 7:00 a.m. - Pine, Colorado

Registration will open January 15, 2015

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 4,650 feet of climb in the 50K and 7,250 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 beautiful scenery, friendly aid stations and generous time cutoffs make North Fork an excellent choice for a first ultramarathon.  Runners get high quality tech Tshirts, unique finisher awards, a fabulous post-race barbecue and the satisfaction of a job well done.

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 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 forests of ponderosa pine and aspens.  Part of the race proceeds also go to the Evergreen Chorale, which brings beautiful music to the Front Range.  You can learn about the Chorale at


The Race

In the Mountains
Just 40 Miles
Southwest of Denver

Current News

The 5th running of the North Fork 50 Mile/50K is now history!  Gorgeous day and lots of good times. 

2014 50 Mile Results

2014 50K Results

Congratulations to all of our finishers!

Check out the 2014 photo gallery and also prior years on the Photos page.

The 2015 race will be held on June 27.  Registration will open January 15.