Boulder County government offices are closed Wednesday, June 19, in observance of Juneteenth. Primary Elections Vote Center locations are open.

Mountain Bikes
Mountain biker

Mountain Bikes

Most trails are multi-use, meaning hikers, bikers, and equestrians may use the trails at the same time. There are over 100 miles of trail open to mountain bikes.


Mountain bikes are permitted on all designated trails EXCEPT:

Trails at Betasso Preserve

Mountain biking is not permitted on Wednesdays and Saturdays at Betasso Preserve. On all other days, mountain bikers are required to travel in one direction. Directional use will alternate monthly and will be indicated on the trailhead sign. Other trail users are encouraged, but not required, to travel in the opposite direction.

Trail Etiquette

  • Always yield the right-of-way to other trail users
  • Announce your presence when approaching other trail users
  • Control your speed at all times
  • Stay on designated roads and trails
  • Practice minimum impact cycling: avoid muddy trails, excessive braking, and shortcutting switchbacks
  • Ride over, not around, water bars

Approaching Equestrians

Many horses are not accustomed to seeing mountain bikers on trails. Please take these special precautions when approaching horses:

  • Slow down
  • Dismount from your bike and step off the trail until the horse and rider have passed
  • Use a normal speaking voice
  • Allow the horse to feel comfortable with your presence
  • Tell the rider how many bikers are in your party

Watch for equestrian hand signals to communicate with other trail users:

  • An arm extended straight-out and down indicates that the rider would like you to slow down
  • A slow forward and back arm wave means that it is okay to pass

Contact Us

Parks & Open Space

8 a.m. to 4:30 p.m.

Office Location

5201 St. Vrain Road
Longmont, CO 80503
Map and Directions
Office Hours: 8 a.m. to 4:30 p.m.
Friday by phone, email, or appointment only.

Parks are open sunrise to sunset