1 miles
Distance
37 ft
Climb
-221 ft
Descent
00:08:33
Avg time

Tunnel 4 Details

  • Riding area
    Los Penasquitos Canyon
    San Diego, California
  • Difficulty rating
  • Trail type
    Singletrack
  • Bike type
    AM
  • Trail Usage
    Multi-use
  • Direction
    Both Directions
  • Climb Difficulty
    Blue
  • Physical rating
    Moderate
  • Global Ranking

One of the few surviving tunnel trails. It gets its name from the way it swoops through dense scrub oak.

Local Trail Association
More Stats for Tunnel 4 mountain bike trail
  • Altitude change
    -184 ft
  • Altitude min
    240 ft
  • Altitude max
    438 ft
  • Altitude start
    438 ft
  • Altitude end
    254 ft
  • Grade
    -3.466%
  • Grade max
    -21.128%
  • Grade min
    8.223%
  • Distance climb
    1,035 ft
  • Distance down
    3,400 ft
  • Distance flat
    861 ft
  • Avg time
    00:08:33
  • Avg reverse time
    00:12:51
  • view trail stats
Status:
on Aug 27, 2018
Very Dry
Avg: 4.15 (6 votes)

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Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Directions to tunnel-4 trailhead (32.945459, -117.164093)

Photos

more »
84 |
Dec 20, 2016 @ 7:30pm
Dec 20, 2016
Tunnel 4, San Diego
44 |
Dec 20, 2016 @ 7:30pm
Dec 20, 2016
Tunnel 4, San Diego
46 |
Dec 20, 2016 @ 7:30pm
Dec 20, 2016
Tunnel 4, San Diego
55 |
Dec 20, 2016 @ 7:29pm
Dec 20, 2016
Tunnel 4, San Diego

Routes with this trail

titleratingdistance
PQ Canyon to Black Mountain
9 miles
Los Penasquitos and Del Mar Mesa Intro Tour
24 miles

1 Review & Comments

  • + 1
flag anthonydiaz (Jul 18, 2018 at 12:47)
 fun trail. just watch for the loose rocks at the beginning. after that its smooth sailing.
[Reply]

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Videos

more »
Tunnels #4 singletrack | PQ Trail, San Diego...
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A Quick Penasquitos Canyon Ride
2:23 | 110 | Apr 29, 2018 , San Diego
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11:40 | 111 | Dec 12, 2017 , San Diego
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