Mountain Bike

Preserves | Sharing the Trails | Access Guidelines | E-Bikes | Email List

Most of Midpen’s 220 miles of designated trails are unpaved “wildland” trails in steep, rugged terrain. Approximately 65% of these trails are multiuse trails and are open to bicyclists, which is the highest ratio of trails open to bikes among parks and open space in the Bay Area. Many of these trails are also single-track trails, providing bicyclists with a more technical experience.

Please Note: Activities may not be designated on all trails within a preserve-- always refer to the map and trail signage for where the activity is permitted. Some trails are subject to seasonal closures, always check trail conditions and refer to signage.

Preserves open to mountain biking

Sixteen open space preserves are open to mountain biking († - all trails; *- designated trails only):

Sharing the Trails

Midpen offers low-intensity recreational use consistent with resource protection and preservation. Many different users are out on the trails exploring open space.

To help make multiuse trails work, each user should keep in mind the needs of others. Bicyclists should always yield to all other trail users. On wide trails, slow down and pass with care. When encountering equestrians and hikers on narrow trails, make your presence known well in advance, particularly when approaching from behind. Stop and wait for them to pass or signal you through. Yield to other bicyclists traveling uphill.

Access Guidelines

  • Helmets: Bicyclists are required to wear helmets, even when riding uphill, that meet the standards of the United States Consumer Product Safety Commission Standard for bicycle helmets, or ANSI or Snell-approved bicycle helmets on all Midpen lands. Helmet straps must be securely fastened when riding.
  • Speed limits: Control your speed at all times and obey the 15 mph speed limit (5 mph when passing or on blind turns). Racing and reckless riding are strictly prohibited.
  • Closed areas/off-trail use: Ride on designated trails only (those shown on Midpen maps for bicycle use). Closed area or off-trail use, including straying off the trail for jumps, “wallrides” and “woop-d-dos” is strictly prohibited.

Download Bicycle Access Guidelines


  • Electric bicycles are NOT allowed on Midpen trails, except for use by individuals with a mobility disability who may use them on trails where bicycles are authorized. Other Power-Driven Mobility Devices Policy
  • As part of a one-year pilot project to begin in December 2020, class 1 and class 2 electric bicycles will be allowed on select paved and improved trails where bicycles are currently allowed at Ravenswood Preserve and Rancho San Antonio Preserve and County Park.
  • All roads and parking areas that are open to public motor vehicles are open to all classes of electric bicycles.
  • A previous plan to develop a one-year pilot project for class 1 e-bikes on select unpaved trails has been postponed due to the staff resources required for COVID-19 response. A pilot proposal is currently scheduled to be brought to the Midpen board of directors in the next fiscal year (Midpen’s fiscal year runs from July 2021 to June 2022).

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