1.0 mile
Distance
9 ft
Climb
-194 ft
Descent
00:09:33
Avg time
Tunnel 4 Details
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Activities
- Mountain Bike
- E-Bike
- Hike
- Trail Running
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Riding AreaLos Peñasquitos Canyon
San Diego, California -
Difficulty Rating
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Voted DifficultyBlue (4 votes)
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Trail TypeSingletrack
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Bike TypeAM, XC, Fat, Adaptive MTB
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DirectionBoth Directions
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Climb DifficultyBlue
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Physical RatingModerate
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Trail VisibilityAlways easy to follow
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Family FriendlyYes
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Dogs AllowedYes
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eBike AllowedYes up to Class 1
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Global Ranking
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Local Popularity100 in Mountain Biking [+]
- 100 in E-Biking
- 60 in Trail Running
- 90 in Hiking
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Land OwnerCity of San Diego
One of the few surviving tunnel trails. It gets its name from the way it swoops through dense scrub oak.
Trail is bi-directional. Always anticipate other trail users.
No horses.
source: The UNPavement
Adaptive Bike Info
aMTB Blue Rating: Intermediate features and steeper terrain.
This trail can be very precarious in sections. Please exercise caution. Advanced riders only. There is one unmarked ride-around that concerned preservationists keep blocking until we can get signage up. Be sure to take East Deer Canyon for exit. Tunnel 1 is mostly impassable for aMTB
Local Trail Association
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Please consider joining or donating to the local trail association to supportdonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
More Stats for Tunnel 4 multi-use trail trail
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Altitude change-186 ft
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Altitude min243 ft
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Altitude max437 ft
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Altitude start437 ft
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Altitude end253 ft
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Grade-3.5%
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Grade max-13.3%
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Grade min4.3%
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Distance climb371 ft
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Distance down3,990 ft
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Distance flat974 ft
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Avg time00:09:33
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Avg reverse time00:14:50
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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
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The colour categories are based on what percentage of riders are riding a trail in its intended direction.
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- > 90%
- > 80%
- > 70%
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- < 50%
- bi-directional trail
- no data
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- > 6 months
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Trail Popularity ?
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Trails are compared with nearby trails in the same city region with a possible 25 colour shades.
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Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
- mountain biking recent
- mountain biking (>6 month)
- hiking (1 year)
- moto (1 year)
Activity Recordings
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Directions to tunnel-4 trailhead
(32.945430, -117.164210)
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Tunnel 4 Trail Reports
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Recent Ridelog Activity on Trail
Past Week
- 15 rides
- 15 miles avg distance
6 Months
- 366 rides
- 15 miles avg distance
All
- 2,750 rides
- Last: Jan 22, 2025
OtherPhotos
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Routes with this trail
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13 Reviews & Comments
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Videos
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3:06 |
38 |
Oct 6, 2024 , San Diego
0:14 |
67 |
Jul 15, 2024 , San Diego
24:45 |
83 |
Jul 7, 2024 , San Diego
10:38 |
86 |
Jun 16, 2024 , San Diego
Nearby Trails
- The Preserve Path 2,730 ft
- Tunnel 1 Connecter 1 mile
- Sideways 2 miles
- Cobbles 2 miles
- Panacea Drop 2 miles
Los Peñasquitos Canyon
- By rwilbur
& contributors - #48263 - 21,055 views
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