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Lower Monroe Truck Trail

Intermediate
 4.3 (89) RECOMMENDED ROUTE

A great doubletrack to the top of Glendora Mountain Road and a screaming downhill.


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Map Key

16.1

Miles

25.9

KM

65%

Singletrack

3,435' 1,047 m

High

1,201' 366 m

Low

2,319' 707 m

Up

2,319' 707 m

Down

5%

Avg Grade (3°)

14%

Max Grade (8°)

Dogs Unknown

E-Bikes Unknown

Overview

The Lower Monroe Truck Trail combines a flat doubletrack rock garden with a steady but gradual eight-mile twisty climb to the top of Glendora Mountain Road. The reward comes in the form of a scenic eight-mile descent back to the start point.

Need to Know

A large parking area is available along Glendora Mountain Road approximately 1/2 mile south of the trailhead and in smaller patches leading into the trailhead.

Description

The ride begins through a fairly flat rock garden creek, a bumpy and twisty 1.7-mile section with intermittent tree cover, but nothing extremely technical. The trail is mostly doubletrack, but narrows to singletrack in various spots along the rock garden.

At the end of the rock garden, the doubletrack takes a sharp right turn to begin a 6.2-mile climb. The climb is not extremely difficult, but it is steady with a very small number of flat areas and short descents along the way. A majority of the ride does not contain any tree cover.

At 3.3 miles, there is a plateau with amazing views of the San Gabriel Valley and south towards Orange County. This is a popular rest point before the climb gets a bit steeper.

From the rest point, the trail continues to climb as it winds along various sides of the mountains, providing great scenery. The trail ends at a turn-around point with a gate that leads to a dirt parking lot, adjacent to Glendora Mountain Road. If you want to skip the climb workout, you can shuttle to this parking lot and downhill the trail all day long.

Making a 180° turn at the gate will send you right back down the way you came up, but at a MUCH faster pace. The ride down Lower Monroe Truck Trail can be compared to a downhill park without the crazy jumps and super sharp turns. It is a fast-paced. twisty ride, negotiating a trail that is rocky and rutted in many places with trail-hugging vegetation.

The downhill seems to last forever and is guaranteed to put a constant smile on your face. On the lower area of the descent, you may encounter a few pedestrians, so a cowbell will serve your downhill well.

Also full-finger length gloves are highly recommended during dry summer months, to protect yourself against those handlebar-level thorny plants. Since you'll be exposed to the sun for the majority of the trail, a good supply of water is also recommended.

Contacts

Shared By:

Aviv Bar

Trail Ratings

  4.3 from 89 votes

#115

Overall
  4.3 from 89 votes
5 Star
44%
4 Star
46%
3 Star
9%
2 Star
1%
1 Star
0%
Recommended Route Rankings

#17

in California

#115

Overall
270 Views Last Month
32,741 Since May 29, 2014
Intermediate

0%
0%
81%
6%
13%
0%

Photos

GMR EAST SESSION - JAN '16
Feb 1, 2016 near San Dimas, CA
Climbing up, about a mile north of Mystic Cyn.
Nov 26, 2015 near Glendora, CA
GMR viewed from Mystic Canyon
Oct 11, 2015 near Glendora, CA
Mystic Canyon
Oct 11, 2015 near Glendora, CA
Lower Monroe Truck Trail Downhill on a 2020 Specialized Fuse Comp Hardtail
Jul 17, 2020 near San Dimas, CA
Lower Monroe Trail Guide
Sep 23, 2018 near Glendora, CA

Weather


Current Trail Conditions

Update Conditions
All Clear 17 days ago See History
Add Your Check-In

Check-Ins

Mar 20, 2022
Jer Collins
2h 30m
Jan 24, 2022
Peter Yi
on the e-mtb. perfect conditions. 15mi — 2h 00m
Dec 11, 2021
Brandon Hanna
16mi
Sep 1, 2021
Bebo Fernandez
First trail
Jul 25, 2021
A V
Jul 13, 2021
Tim K
Shuttled to top and rode the trail down. Great views. This is mostly singletrack now. 7.1mi — 1h 05m
Apr 18, 2021
A V
Apr 17, 2021
Mark Hartsook
16.3mi — 2h 00m