Upper Monroe Truck Trail

MODERATE 24 reviews

Upper Monroe Truck Trail is a 11.8 mile moderately trafficked out and back trail located near Glendora, California that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

11.8 miles
2,411 feet
Out & Back

dogs on leash



mountain biking

nature trips

trail running



wild flowers




old growth

over grown


6 months ago


9 months ago

Nice trail for most. lower part is fun for kids but wouldnt recommend kids once you get to the hook and start heading up. Keep your eyes open! A mountain lion was roaming today#

off road driving
10 months ago

Closed to vehicles.

mountain biking
Saturday, June 03, 2017

Great trail. Nice rock sections. Good climb. Great DH. DH would be better if didn't have to watch for hikers. More so cal trails need designated up and down trails. Earlier the better to miss trail traffic.

Saturday, June 18, 2016

I went today to go off road ing and it was closed drove 1.5 hrs to be closed

Friday, December 26, 2014

love this trail. bike up it 2 or 3 times a week and hike up poop out to part of it. mystic also runs into it. very busy trail lately for hikers and mtbers. people do need to know that mountain bikers go down fast and hikers need to pay attention!

Saturday, October 25, 2014

This is definitely a new favorite for me! I only hiked until my tracker said 5 miles but 10 miles round trip was plenty for me. This trail is clean and not very crowded on a Saturday morning. The mountain bikers were a little scary but everyone was friendly. The way this trail gets you to the top is very comfortable and the views are awesome. There are no restrooms and no water so be prepared. Loved everything about it!!

mountain biking
Thursday, August 07, 2014

This is a pretty long trail if you take it to the ridge. You can mix it up with the Mystic Canyon or PoopOut trails to add some variety to the hikes in the area. I've only biked it, and yes you have to keep an eye out for the mountain bikers coming down. If you know the shuttle (they run mtn bikers up the road and they ride down the trail) is running that day then yes be very alert for them. Other times, i imagine the trail isn't as busy. Some nice views, scenery changes from a creek/canyon to hilltops and narrow trails. Always keep an eye for poison oak and although I didn't see any some wildlife.

mountain biking
Wednesday, March 26, 2014

I've hiked and gone mountain biking on this trail. Very enjoyable, nothing crazy, just some nice views. Perfect for a nice after work ride.

mountain biking
Friday, January 17, 2014

this trail is very very long took over three hrs to get to the top. early morning there are lots of mountain bikers coming down the trail at blazing speeds.

mountain biking
Sunday, May 26, 2013

Great shuttle run, very exhausting if going out and back "loop" recommend to park one vehicle at the bottom and drive up with another!!!

3 months ago

11 months ago

11 months ago

mountain biking
11 months ago

Saturday, May 13, 2017

Wednesday, May 10, 2017

Sunday, May 07, 2017

mountain biking
Saturday, April 08, 2017

Sunday, March 27, 2016

Tuesday, November 24, 2015

Sunday, September 01, 2013

recorded saturday hike/run

Saturday, February 09, 2013