3,649 ft
Distance
20 ft
Climb
-272 ft
Descent
00:03:44
Avg time

Thorn Alley Details

  • Riding Area
    Lime Ridge
    Concord, California
  • Difficulty Rating
  • Trail Type
    Singletrack
  • Trail Usage
    Multi-use
  • Direction
    Downhill Primary
    Popular direction shown
  • Climb Difficulty
    Blue
  • Physical Rating
    Moderate
  • eBike Allowed
  • Global Ranking
    #52288 in Mountain Biking

It's all in the name. Thorn Alley often had a lot of goat heads on it. It is also crowded with hikers so be careful. The Back 9 trail lacks thorns and hikers.

Local Trail Association
  • Please consider joining or donating to the local riding association to support trail development & maintenance.
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More Stats for Thorn Alley bike trail
  • Altitude change
    -252 ft
  • Altitude min
    475 ft
  • Altitude max
    743 ft
  • Altitude start
    727 ft
  • Altitude end
    475 ft
  • Grade
    -6.908%
  • Grade max
    -16.015%
  • Grade min
    7.336%
  • Distance climb
    371 ft
  • Distance down
    3,025 ft
  • Distance flat
    254 ft
  • Avg time
    00:03:44
  • view trail stats
Status:
on Dec 2, 2018
Prevalent Mud
no votes yet

view (518)
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Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
LEGEND
Trail Difficulties
  • Access Road/Trail
  • White
  • Green
  • Blue
  • Black
  • Double Black Diamond

Trail Report Status
  • Clear / Green
  • Minor Issue / Yellow
  • Significant Issue / Amber
  • Closed or Major Issue / Red

  • Land Owner Overlay
  • Wilderness (typically no bikes in USA)
  • BLM (public)
  • USFS (Wildlife sanctuaries darker than usfs)
  • State land
  • Indigenous
  • Military
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
  • Map Markers
  • trail Trail Head
  • photo Photo
  • place Directory Listing
  • region Riding Area
  • TTF TTF
  • Parking Parking
  • Viewpoint Viewpoint
  • Information Information
  • Warning Warning
  • Directions Directions
  • Water Fountain/Source Water Fountain/Source
  • Sight Sight
  • Restrooms Restrooms
  • Gate Gate
  • Camping Camping
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Other Other
Directions to thorn-alley trailhead (37.937492, -121.989082)
update trails status or condition

Thorn Alley Trail Reports

datedescription
Dec 2, 2018 @ 9:55am
Dec 2, 2018
Very muddy, especially near the bottom.
Nov 25, 2018 @ 7:40pm
Nov 25, 2018
Very muddy right now. Maybe wait a few mote days of sunshine
Oct 30, 2018 @ 3:19pm
Oct 30, 2018
Very dry and cracked. Not as smooth and flowy as it usually is. The saddle at the top is basically sandy moon dust. Rain needed badly.
Oct 27, 2018 @ 7:10am
Oct 27, 2018
Super sandy out there. Need some rain to firm up the trails.
Sep 25, 2018 @ 6:43pm
Sep 25, 2018
Pretty dry and cracked and sandy in some places, but overall fast and flowy
view all reports »

Photos

more »
2 |
Oct 30, 2018 @ 3:19pm
Oct 30, 2018
Thorn Alley, My City
29 |
Jul 23, 2018 @ 11:14am
Jul 23, 2018
| 4 comments Thorn Alley, Bay Area

Reviews / Comments

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Videos

more »
Thorn Alley (Lime Ridge)
2:45 | 20 | Oct 18, 2018 , Concord

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