21.5 miles
Distance
4,619 ft
Climb
-4,624 ft
Descent
1,821 ft
High Point
Great tour of Big Rock Ridge and Loma Alta, featuring amazing views, lots of climbing, and 3 classic Marin Singletracks.
Detailed Description
22 mile Big Rock & Loma Alta Tour. is a 22 mile popular easy route located near Lucas Valley - Marinwood California. This mountain bike primary route can be used both directions and has a moderate overall physical rating. This route includes 5 trails. This route climbs 4,619 ft with a max elevation of 1,821 ft then descends -4,624 ft.
Route Supporters
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Trails in Route
| 3 miles | |||||
| 2 miles | |||||
| 3 miles | |||||
| 2 miles | |||||
| 2,851 ft |
Details
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Riding area
-
Primary ActivityMountain Bike
-
Other Activities
- E-Bike
-
Difficulty ratingGreen
-
Route TypeLoop
-
eBike Allowed
-
DirectionBoth Directions
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Physical ratingModerate
More Stats for 22 mile Big Rock & Loma Alta Tour. mountain bike route
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Altitude min103 ft
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Altitude start121 ft
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Altitude end115 ft
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Grade-0%
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Grade max-55%
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Grade min71.3%
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Distance climb9 miles
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Distance down11 miles
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Distance flat4,603 ft
close
3D
Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Inadequate
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (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.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
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
Contribute Details
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
x
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
Trailforks users anonymized public skilogs from the past 12 months.
- Downhill Ski
- Backcountry Ski
- Nordic Ski
- Snowmobile
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
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Photos
Videos
Big Rock Trail / Marin County Flow & Switchbacks
trail: Big Rock Trail
7:15 | 103 | comments: 0 | favs:
Feb 8, 2022
Recent Trail Reports Along Route
more reports »
- By capttcs
& contributors - #35923 - 224 views