East Boundary Trail is a 11.2 mile moderately trafficked out and back trail located near Los Osos, California that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is best used from February until November.

11.2 miles
2,273 feet
Out & Back



nature trips

trail running



wild flowers


no dogs

Sunday, August 20, 2017

I believe this was my first hike when I moved back to SLO COUNTY and was living in Los Osos. Not for the faint of heart and definitely bring lots of water. It goes way back so best to hike with a partner and bring a phone just in case. Moderate inclines and great views once you get up in the mountains.

Tuesday, August 02, 2016

Bring a trekking pole to swat away spider webs if you go early in the morning! BEAUTIFUL trail. Favorite I've done in the area so far. We met up with East Boundary via the Hazard Peak trail & then headed down Islay Road back out to Pecho Road. 9 mile loop, highly recommend!

mountain biking
Monday, January 20, 2014

Go out here a lot it is a Great place to ride mountain bikes via connector trails, see many people hiking out there as well but mostly mountain bikers of all skill levels. Lots of elevation and rocky descents are out there as well. Good place to take a lunch as far out as you can go to relax in solitude.