Quick Course Description

67.5 miles
8,500 ft gain
10,500 ft descent

Here is a quick and basic course description.

Start at the Nederland High School and ride some West Mag trails including Hobbit 1,2 & 3, make our way back to the Ned High School then to the town of Eldora.

Then we ride up 505 to the top of Caribou, drop down the Full Ned Secret trail which is a super fun long descent. Hit up Sherwood forest, make our way to the Sourdough trail by the frontage road of Peak to Peak Highway. After sourdough we go directly to St.Vrain which is a technical descent. Then head over toward Gold Lake, some secret trails toward Jamestown. Climb Slaughter House Gulch and descend Flying Squirrel, a tech dirt rd descent. Down Lefthand Canyon to the intersection of James Canyon and Lefthand, up the short hike-a-bike to the OHV trails. Back down to lefthand and the Old Stage back to the dirt bike path south to the Foothills Community Park.

To sum it up, we link some of the best downhill single tracks between Nederland and Boulder, most of which you probably haven’t ridden or knew existed.


This course is not easy. A few of the climbs are long and the descents are technical. It’s one of those events that you actually have to rest on the climb cause the descents are going to take a lot from you.


If you have done any of the Cougar Slayers in the past you have an idea of what the course is like.