Trail Run Project Logo

Las Trampas North Loop

  4.0 ( 8 ) Favorite


9.6 mile 15.4 kilometer point to point
79% Runnable


Ascent: 2,273' 693 m
Descent: -2,300' -701 m
High: 1,796' 547 m
Low: 646' 197 m


Avg Grade: 9% (5°)
Max Grade: 49% (26°)


Driving directions Take a virtual tour
Zoom in to see details
Map Key

Trail shared by Trail Run Project Staff

Plenty of climbing means you get great views from the peak and all along the Ridge Trail.

Trail Run Project Staff

Features Views · Wildflowers · Wildlife


This route offers great hill climbing with views of the surrounding area from the peak as well as the Las Trampas/Calaveras Ridge Trail. On a clear day, you can see Mt. Diablo off to the east. You'll be surrounded by green hills and wilflowers in the spring.

Need to Know

There is one bathroom at the trailhead. Most of the route is exposed, so prepare accordingly.


From the main parking lot, head towards the cattle gate and follow the sign to Bollinger Creek Loop Trail. This trail gradually climbs uphill and is exposed. At just before the 1.0 mile mark, make a right to stay onto Bollinger Creek Loop Trail where the climbing becomes steeper.

A left onto Las Trampas/Calaveras Ridge Trail continues the climb until you reach a small detour to the left to head to Las Trampas Peak at an elevation of 1827 feet. Take the detour and take some time here to look around, Mt. Diablo will be visible towards the east and you can see some of the trail system from the park to the west.

Head back down on the same detour to join back to the Las Trampas/Calaveras Ridge Trail to continue on a gradual downhill towards Madrone Trail, where you'll make a right. Rolling hills are next on mostly exposed trail. This is the most common trail to see cows grazing.

Make a right onto Virgil Williams Trail where the climbing will start again, but most of this trail is lined with trees that provide much-needed shade. A right onto Del Amigo Trail continues the climbing but now back to exposed trail. Then, take a right onto Las Trampas/Calaveras Ridge Trail where you'll feel like you are running on top of the world.

Be sure to look around and take in the 360 degree views from this trail before making a left onto Chamise Trail where a very fast descent will take you back to the parking area.

Flora & Fauna

Cows, always cows.

Run this trail?

We need help with the following missing trail information:

Runner Notes, History & Background

Is something wrong? Let us know. Have photos to share? Help fellow runners know what's here.


Rate This Featured Run

Rate Quality

   Clear Rating

Rate Difficulty

Share This Run

Check In


May 27, 2017
Logan Tretter
Climb in the latter few miles was a little confusing.. almost little rabbit trails that the route was on. But it was pretty cool! 9.7mi

Trail Ratings

  4.0 from 8 votes


  4.0 from 8 votes
5 Star
4 Star
3 Star
2 Star
1 Star
Featured Run Rankings


in California


65 Views Last Month
1,975 Since Feb 28, 2016



First view of Mt Diablo against the rising sun
Sep 30, 2018 near Alamo, CA
Sunlight filtering through the oak trees
Sep 30, 2018 near Alamo, CA
View from Madrone Trail.
Feb 28, 2016 near Alamo, CA
View of Mt. Diablo from Las Trampas Peak.
Feb 28, 2016 near Alamo, CA
View from Las Trampas Ridge Trail.
Feb 28, 2016 near Alamo, CA
View of the west side of Las Trampas.
Feb 28, 2016 near Alamo, CA


Trail Run Project is part of the REI Co-op family,
where a life outdoors is a life well lived.

Shop REI Running