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1,184 ft
Distance
-127 ft
Descent
00:01:28
Avg time
-127 ft
Altitude change
1,172 ft
Altitude min
1,300 ft
Altitude max
1,300 ft
Altitude start
1,171 ft
Altitude end
-10.8%
Grade
-39.3%
Grade max
-0.9%
Grade min
1,184 ft
Distance down
00:01:28
Avg time
Tarantula Alt. Details
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Activities
- Mountain Bike
- Hike
- Trail Running
-
Riding AreaDel Valle Regional Park
Livermore, California -
Difficulty Rating
-
Local Popularity
-
Global Ranking
-
State Ranking
-
Trail TypeSingletrack
-
DirectionBoth Directions
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Dogs AllowedYes
No community description for Tarantula Alt. trail has been added yet!
AI Generated Description
Tarantula Alt. is a 1,184 ft popular blue difficulty singletrack trail located near Livermore California. This mountain bike primary trail can be used both directions. On average it takes 1 minutes to complete this trail.
This trail is unsanctioned.
Recent Activity on Trail
Past Week
- 1 rides
- 7 miles average
6 Months
- 16 rides
- 11 miles avg distance
All
- 141 rides
- Last: Nov 14, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Tarantula Alt. Trail Reports
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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
Trail Flow (Ridden Direction)
Trailforks scans users activity logs 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 users are riding a trail in its intended direction.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Used
Trailforks scans activity logs 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
Contribute Details
Colors indicate trail is missing specified detail.
- Description
- Photos
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- Videos
Trail Popularity ?
Trailforks scans activity logs 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 activities = more kinetic energy = warmer colors.
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- popular
- less popular
- not popular
ATV/ORV/OHV Filter
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Activity Recordings
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Activity Recordings
Trailforks uses anonymized public activity data.
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Winter Trails
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Missing Trails
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Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
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Slope Aspect
Direction the slope faces
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Directions to tarantula-alt trailhead
(37.597150, -121.694850)
Photos
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Videos
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Nearby Trails
- Down The Gut 236 ft
- Tarantula 512 ft
- On Top 525 ft
- Corral Left 531 ft
- Corral Right 558 ft
Del Valle Regional Park
- #618845 - 368 views
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