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One of the few "Tunnels" recently re-opened; this is a fun, winding, tree-covered trail.


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1.0

Miles

1.7

KM

Singletrack

437' 133 m

High

248' 76 m

Low

11' 3 m

Up

189' 58 m

Down

4%

Avg Grade (2°)

8%

Max Grade (5°)

Dogs Unknown

E-Bikes Allowed

Description

This is a great trail. The "Tunnels" have been a longtime favorite with riders in the area. Sadly, they were closed for many years. but were reopened in 2015 as part of a new plan for the Del Mar Mesa Preserve.

Tunnel #4 drops into the tunnels from the top of the mesa. From the bottom, you can head West or East.

A great singletrack, tree-covered trail. The trail itself is steep in some sections and rocky in others. While ample tree cover provides shade, roots are also an obstacle on this trail, so keep an eye out for them! Between rocks, roots, and the grade, this trail will test your skills.

Shared By:

Doug Rierdan with improvements by Ilana H

Trail Ratings

  4.5 from 46 votes

#192

Overall
  4.5 from 46 votes
5 Star
63%
4 Star
30%
3 Star
4%
2 Star
2%
1 Star
0%
Trail Rankings

#15

in California

#192

Overall
49 Views Last Month
13,332 Since Oct 23, 2015
Intermediate/Difficult Intermediate/Difficult

0%
0%
39%
30%
32%
0%

Photos

Tunnel 4 or Tunnel 1?
Sep 29, 2016 near Fairban…, CA
Tunnel 1.
Sep 29, 2016 near Fairban…, CA
Tunnel 1.
Sep 29, 2016 near Fairban…, CA
Tunnel 4
Sep 29, 2016 near Fairban…, CA
Tunnel 4.
Sep 29, 2016 near Fairban…, CA
Tunnel 4.
Sep 29, 2016 near Fairban…, CA
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Weather


Current Trail Conditions

All Clear 15 days ago
Add Your Check-In

Check-Ins

Dec 30, 2025
Ilana H
A couple of trees you had to duck under. Overgrown plants on the side of the trail. 1mi — 0h 30m
Aug 24, 2024
Olaf Zinke
Feb 12, 2023
James Hippolyte
Sep 16, 2022
Michael Bishop
Jul 30, 2022
Michael Bishop
Dec 12, 2021
Michael Bishop
Mar 8, 2021
Chuck Edenburn
15mi — 2h 00m
Dec 18, 2020
Brandon Rigg
Trail is in awesome condition at the moment. Nice and tacky from recent rains.
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