4,931 ft
Distance
62 ft
Climb
-756 ft
Descent
00:09:29
Avg time

Birthday Details

  • Activities
    • Hike
    • Trail Running
  • Riding Area
    Las Trampas Regional Park
    Alamo, California
  • Difficulty Rating
  • Voted Difficulty
    Black Diamond (1 vote)
  • Hiking SAC Scale
    T1 Hiking
  • Trail Type
    Singletrack
  • Trail Usage
    Multi-use
  • Direction
    Downhill Primary
    Popular direction shown
  • Climb Difficulty
    Blue
  • Physical Rating
    Moderate
  • Dogs Allowed
    Yes
  • eBike Allowed
  • TTFs on Trail
    Rock Garden
  • Local Popularity
    100 in Hiking [+]
    • 5 in Trail Running

Bomber ridge line downhill with steep rocky sections and fun single track flow. People do hike up, be cautious.

More Stats for Birthday hike trail trail
  • Altitude change
    -694 ft
  • Altitude min
    492 ft
  • Altitude max
    1,186 ft
  • Altitude start
    1,186 ft
  • Altitude end
    492 ft
  • Grade
    -14.071%
  • Grade max
    -45.132%
  • Grade min
    27.533%
  • Distance climb
    572 ft
  • Distance down
    4,292 ft
  • Distance flat
    67 ft
  • Avg time
    00:09:29
  • Avg reverse time
    00:22:28
  • view trail stats
Status:
on Nov 22, 2020
Dry
Avg: 2 (4 votes)

view (78)
close
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail Ridden Direction
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
ContributeDetails
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
  • most popular
  • popular
  • less popular
  • not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches

Radar Time
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

  • 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 Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • 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
  • Sight Sight
  • Restrooms Restrooms
  • eBike Charging Point eBike Charging Point
  • Water Fountain/Source Water Fountain/Source
  • Gate Gate
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Ladder Ladder
  • Stairs Stairs
  • Bridge Bridge
  • Boardwalk Boardwalk
  • Camping Camping
  • Cabin Cabin
  • Lodge Lodge
  • Bear Cache Bear Cache
  • Dock Dock
  • Ranger Station Ranger Station
  • Summit Summit
  • Other Other
      Directions to birthday-105465 trailhead (37.837912, -122.054104)
      update trails status or condition

      Birthday Trail Reports

      statusdatedescription
      Nov 22, 2020 @ 10:34am
      Nov 22, 2020
      first half is great flowy singletrack, second half has some ruts and loose bits
      Aug 23, 2020 @ 8:05am
      Aug 23, 2020
      Aug 23, 2020 @ 8:05am
      Aug 23, 2020
      Nov 6, 2019 @ 4:22pm
      Nov 6, 2019
      The brush is a little thick in spots but generally not bad
      Sep 22, 2019 @ 6:13pm
      Sep 22, 2019
      Overgrown
      view all reports »

      Recent Ridelog Activity on Trail

      Past Week
      • 0 rides
      •  
      6 Months
      • 5 rides
      • 5 miles avg distance
      All
      • 0 rides
      •  

      Photos

      more »
      64 |
      May 11, 2020 @ 12:48am
      May 11, 2020
      64 |
      May 11, 2020 @ 12:47am
      May 11, 2020
      131 |
      Jun 29, 2019 @ 7:17am
      Jun 29, 2019
      108 |
      Jun 29, 2019 @ 7:17am
      Jun 29, 2019

      Routes with this trail

      titleratingdistance
      Las Trampas Loop #1
      11 miles

      5 Reviews & Comments

      • + 0
      CLewis215 Trailforks Pro Subscriber (Jun 26, 2019 at 20:45)
       Ridiculously overgrown and tore up. It has tons of potential to be a fun and techy downhill but in its current state it’s more abuse than reward. 2/5
      [Reply]
      • + 0
      FerdaWeekend Trailforks Pro Subscriber (Jun 29, 2019 at 7:15)
       This trail needs maintenance. In spots you can barely see the trail, it’s so overgrown. See the picture I’ve uploaded. It could be great with a little work. Looks like I wasn’t the only one bushwhacking that day!
      [Reply]
      • + 0
      jghali Trailforks Pro Subscriber (Jul 29, 2019 at 15:26)
       Overgrowth makes it a pain and it seriously needs to be trimmed down. Pretty fun and challenging trail
      [Reply]
      • + 1
      cjd89 Trailforks Pro Subscriber (May 6, 2020 at 21:47)
       Requires a big bike. Blown out.
      [Reply]
      • + 2
      ac15 Trailforks Pro Subscriber (Aug 5, 2020 at 21:50)
       Ride this today and it is great. There is a tree down near the top of the trail, you can easily ride around it. The singletrack is in good condition, just a little loose
      [Reply]

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