Quick Course Description

65 miles
8,500 ft gain
11,500 ft descent

Here is a quick and basic course description.

We will begin at the Nederland High School and ride some West Mag trails including Hobbit 3.

Then we ride up 505 to the top of Caribou, drop down the Full Ned Secret trail which is a super fun long descent. Make our way to the Sourdough trail heading North hitting up St.Vrain which is a technical descent. Then we cut thru the town of Ward and head South on some fun dirt roads reaching Todd’s Gulch, another fun technical descent. Head South and then West on the Switzerland trail to Gordon’s Gulch. We then make our way back on mixed rd and single track into Boulder. To sum it up, we link some of the best downhill single tracks between Nederland and Boulder.


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.


Want to see more detailed course, register for the race.
If you have done any of the Cougar Slayers in the past you have an idea of what the course is like. We did a route very similar in 2015, 75% of it is the same.