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1.8 miles
Distance
65 ft
Climb
-451 ft
Descent
00:08:59
Avg time
-386 ft
Altitude change
361 ft
Altitude min
752 ft
Altitude max
747 ft
Altitude start
361 ft
Altitude end
-4.1%
Grade
-23.074%
Grade max
15.784%
Grade min
2,055 ft
Distance climb
1 mile
Distance down
575 ft
Distance flat
00:08:59
Avg time
Alta Trail Details
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Activities
- Mountain Bike
- E-Bike
- Gravel Bike
- Adaptive Bike
- Winter Fat Bike
- Horse
- Hike
- Trail Running
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Riding AreaMarin Headlands
Sausalito, California -
Difficulty Rating
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Local Popularity55 in Mountain Biking [+]
- 80 in E-Biking
- 60 in Trail Running
- 45 in Hiking
- 5 in Horseback
- 5 in Winter Fat Biking
- 5 in Adaptive Biking
- 60 in Gravel Biking
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Hiking SAC ScaleT1 Hiking
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Trail TypeDirt/Gravel Road
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Bike TypeDH, AM, XC, DJ, RD, Fat, Adaptive MTB, CX, Gravel
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DirectionBoth DirectionsPopular Direction Shown
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Climb DifficultyBlue
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Physical RatingModerate
-
Trail VisibilityAlways easy to follow
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Dogs AllowedYes
-
eBike Allowed
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Land OwnerNational Park Service
Fire road leading from the junction of Bobcat and Marincello trails to a housing development at Donahue St.
Local Trail Association
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-
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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
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 13 rides
- 21 miles avg distance
All
- 59 rides
- Last: Oct 7, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Alta Trail 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)
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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
- Description & Photos
- 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
Max Vehicle Width
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US Cell Coverage
Legend
Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
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Activity Recordings
Trailforks uses anonymized public activity data.
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Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
Missing Trails
Most Popular
Least Popular
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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Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.
Slope Aspect
Direction the slope faces
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Directions to alta-trail trailhead
(37.854680, -122.504580)
Photos
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Videos
no videos have been added for Alta Trail yet, add a video.
Routes with this trail
25 km • 704 m • 5 •
Simple 15-mile loop around Cavallo Point and Marin Headlands.
Trail Products
acyclist
Has a very steep section which may require some pushing, otherwise it's a gradual climb. The best dirt road to get to the top of the ridge is Marincello Road.
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Nearby Trails
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- By Upescalator
& contributors - #206861 - 2,978 views
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