When we designed our trail system, we made a key decision. We could have made every trail for everyone. Instead, we decided to make trails that were really focused on what the user was looking for. There are times when hikers and bikers can share trails and there are other times where it is nice to be separated. Instead of each trail being "OK" for every user, we want each trail to be exceptional for its intended user. That led us to three distinctive trail designations.
Two-Way Hiking and Uphill Biking Only. The Argentine North Fork and Up At Arapahoe trails form the main route to the Summit. Uphill bikers generally move kind of slower and on these trails hikers and bikers mesh well.
Downhill Biking Only. The Beavers Loop and Wheels Up Trails are for downhill biking only. On a good downhill trail, neither bikers or hikers want to encounter the other. These trails are designed for good fun downhill riding.
Hiking Only. The Halfmoon Trail is for hiking only. Portions of the trail are not suited for bikes and this is a good place for hikers to not have to worry about encountering bike riders.