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A tough ascent of Mt Diablo from the Clayton side, utilizing steep fire roads.


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Map Key

13.4

Miles

21.5

KM

15%

Singletrack

3,443' 1,050 m

High

547' 167 m

Low

3,018' 920 m

Up

3,018' 920 m

Down

9%

Avg Grade (5°)

27%

Max Grade (15°)

Dogs No Dogs

E-Bikes Allowed

Overview

A counter-clockwise loop with a long, steep climb and descent that can be loose and gnarly in sections.

There are great views from the summit area of Mt Diablo.

Description

From the trailhead, the road rolls gradually up Deer Flat Creek for the first couple of miles until you reach a series of switchbacks, which are a low-gear grind up to Deer Flat overlook. The lower trail is smooth and shaded in oak woodlands then becomes rockier and more open as elevation is gained.

From the overlook, stay right and continue climbing steeply through switchbacks on Meridian Ridge Road to Deer Flat Road.

Stay left here and enjoy the views as you pedal to the intersection with a road section of Summit Trail - Mt. Diablo. You'll top out just below the summit of Mt Diablo at the Devil's Elbow. You can reach the summit via the road.

The downhill portion of the ride begins on North Peak Trail. The route starts off fairly mellow and level as a warm-up, but there are technical sections as you descend on the north side towards Prospectors Gap. Approaching Prospectors Gap, the trail splits, with most riders continuing straight while the actual trail branches to the left. Have no fear, both branches terminate on Prospectors Gap Road.

Bear left to descend Prospectors Gap Road to Meridian Ridge Road. Turn right here and get ready for a loose and steep section of road just past the intersection. The road continues downhill with plenty of gnarly terrain.

At the bottom, turn left on Donner Creek Road for a mellow pedal back to the beginning of the ride.

Contacts

Shared By:

Leslie Kehmeier with improvements by Kishan Ganapathi

Trail Ratings

  3.5 from 17 votes

#2656

Overall
  3.5 from 17 votes
5 Star
12%
4 Star
47%
3 Star
18%
2 Star
24%
1 Star
0%
Recommended Route Rankings

#320

in California

#2,656

Overall
45 Views Last Month
9,285 Since Oct 26, 2016
Difficult Difficult

0%
0%
8%
8%
83%
0%

Photos

View down North Peak Trail to Devil's Elbow
Apr 4, 2013 near Blackhawk, CA
Neer Meridian ridge road junction
Feb 1, 2020 near Clayton, CA
View of/from North Peak Trailhead
Jun 17, 2013 near Blackhawk, CA
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Weather


Current Trail Conditions

All Clear 94 days ago
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Check-Ins

May 13, 2021
Natan Lieberman
Mar 2, 2021
Casey Cline
Dry like Bud Dry, brah
Nov 29, 2019
Wilbert Sequeira
Aug 21, 2019
Ray Taylor
Steep but doable, descent VERY challenging with loose gravel that varies from dust (talc) to 1" gravel on VERY steep drops, you can't "let it go" 15mi — 1h 50m
Jul 7, 2019
Igor Valantic
Feb 24, 2019
Kam Lawson
nice going up patches of mud easy to go around one small stream we had to cross 6mi
Aug 13, 2018
Daniel de Haas
Super loose on the way down, makes braking and cornering very difficult 15.6mi
Aug 13, 2018
Diego Soto
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