Las Trampas to Mt. Diablo Regional Trail

Trail Info

See: Trail Map
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Parking Fee
No fees

Open between 5am and 10pm unless otherwise posted or permitted.

Phone Number
Toll Free: 888-EBPARKS (888-327-2757)

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Las Trampas to Mt. Diablo Regional Trail

About the Trail

This hiking and equestrian trail connects Las Trampas Regional Wilderness to Mount Diablo State Park. Completed in 1997, this five-mile trail connects two of the most significant open space parklands in central Contra Costa County. Planning for the trail dates back to the Park District’s 1973 Master Plan and rights-of-way and trail easements were purchased in the 1970s.

Leaving the eastern edge of Las Trampas at Camille Lane in Alamo, the trail goes through Hap Magee Ranch Park in Danville, passes under I-680, weaves its way over the ridge, crosses Stone Valley Road in Alamo, ascends the grassland and chaparral-dotted slopes overlooking the valley, and enters Mt. Diablo State Park at Macedo Ranch Gate. Passing through residential and open space areas, it provides convenient access and offers an interesting contrast between development and parkland.

Ancient oaks, rolling hills, and spectacular views greet those willing to challenge this unique regional trail. Access to the trail for equestrians is most convenient at Macedo Ranch Gate at the north end of Green Valley Road above Danville. For hikers, Macedo Ranch Gate on the north end, La Gonda Way on the south end, or Oak Hill Park in the middle (at Stone Valley Road and Glenwood Court, in Alamo) are the best access points. At Macedo Ranch Staging Area in Alamo, the trail connects with the Briones to Mt. Diablo and Green Valley regional trails


Trail Mileage Guide

Trail Accessibility

Sections of the trail are wheelchair accessible.

Responsible Trail-Use Rules

Multi-Use Trail

Safe use of this and other multiple use trails requires everyone's cooperation. Each trail user is asked to exercise common courtesy. BICYCLES YIELD to horses and hikers. HIKERS YIELD to horses. Stay to the right of the trail except when passing. NO MOTORIZED VEHICLES are permitted on the trail, wheelchairs excepted.

Violations of any of the following may result in a citation.

All Trail Users

  • Be safe, considerate and aware of your impact on the trail and other trail users.
  • For everyone's safety, keep to the right. Proceed single file around blind curves.
  • For your safety, headphones are not advised.
  • Safety helmets are required by law for bicyclists under age 18 and are strongly recommended for all bicyclists and equestrians.
  • Dogs must be on leash where posted, and under full verbal control elsewhere. Please clean up after your dog.


  • Bicycles are not permitted, either walked, ridden or carried, on trails marked "No Bicycles."
  • Bicycles shall not be ridden at an unsafe speed, or greater than the posted speed limit. Be aware of how you are perceived by other trail users.
  • Bells are required on bicycles on Park District trails.
  • Bicycles always yield to pedestrians. Before passing, SLOW DOWN, ring bell and establish verbal contact.
  • When approaching equestrians, call out, ring bell and STOP, whether you are seen or not. Ask for instructions on how to pass safely.
  • On blind turns, SLOW DOWN, call out, ring bell and ride single file.


  • Keep to the right when approached by others.
  • Always yield to equestrians.
  • Look behind and to both sides before changing course.


  • Keep your horse to the right or where safe when encountering other trail users.
  • Communicate. Let other trail users know how to pass your horse safely.
  • Please clean up after your horse on paved trails.

In case of emergency dial 9-1-1.

Trail conflicts or violations should be reported to the Trail Hotline at (510) 733-6991.
For an immediate response, call (510) 881-1833

Trail Map

Trail Map