17 miles
Distance
1,880 ft
Climb
-1,881 ft
Descent
439 ft
High Point

A customizable, base-idea loop that includes Tunnel 4, Deer canyon, Ocean Air/Carmel Mt and PQ canyon. Mostly easy trails, but beginners may need to walk a few steep sections and obstacles, or change the route a little.

Typically ridden counter clockwise to descend a couple steeper trails, but could also be ridden clockwise, maybe with some route changes, to use less steep climbs.

Customize the route with other trails like ride Switchbacks or Eucalyptus instead of Tunnel 4, or add Tunnel 1. Use the easy del Mar Mesa Road bypass instead of steeper Palacio Drop. Return to PQ canyon using Side Hill or Cobbles instead of Waimea. Or go further west to hit Return of the Crabs.

Local Trail Association
San Diego Mountain Biking Association (sdmba.com)
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Details

  • Riding area
  • Difficulty rating
    Green
  • Route Type
    Loop
  • Bike type
    AM, XC, CX, Gravel
  • Direction
    One Direction
  • Physical rating
    Moderate
More Stats for Tunnels and Ocean Air Loop mountain bike route
  • Altitude min
    59 ft
  • Altitude start
    237 ft
  • Altitude end
    237 ft
  • Grade max
    -36.244%
  • Grade min
    30.013%
  • Distance climb
    8 miles
  • Distance down
    7 miles
  • Distance flat
    2 miles
Avg: 5 (1 votes)
close
Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Trail transparency
Tunnels #4 singletrack | PQ Trail, San Diego...
Tunnels #4 singletrack | PQ Trail, San Diego MTB POV
trail: Tunnel 4
4:33 | 89 | comments: 0 | favs:
Jun 29, 2018
A Quick Penasquitos Canyon Ride
A Quick Penasquitos Canyon Ride
trail: Tunnel 4
2:23 | 138 | comments: 0 | favs:
Apr 29, 2018
REVIEW: #275plusTrek Fuel EX 9.8 - First Look [HD]
REVIEW: #275plusTrek Fuel EX 9.8 - First Look [HD]
2:30 | 55 | comments: 0 | favs: 1
Dec 12, 2017
View this video on our YouTube channel here: https://youtu.be/22EDgx3OuZE Click on my profile for a direct link to the Ride Alongside YouTube...

Recent Trail Reports Along Route

traildateconditiondescription
Tunnel 4
Oct 18, 2018 @ 3:00pm
2 days
Powerline
Oct 18, 2018 @ 12:52pm
2 days
Minor erosion from recent rains. But good dirt.
Two Bridges
Oct 18, 2018 @ 12:51pm
2 days
Anderson Ridge Climb
Sep 18, 2018 @ 6:10am
Sep 18, 2018
Ocean Air Schoolhouse
Sep 18, 2018 @ 6:10am
Sep 18, 2018
more reports »
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