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Trail Conditions
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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
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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
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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.
- most popular
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- less popular
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ATV/ORV/OHV Filter
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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
![map legend]()
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
Trails Deemphasized
Trails are shown in grey.
Only show trails with no bike usage.
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SaveMill Valley trails and routes are listed on Trailforks with interactive trail maps, difficulty ratings, photos, and user-reported trail conditions. Supported activity types include Hiking, Trail Running, Mountain Biking, Horseback, Gravel Biking, Adaptive Biking and E-Biking. Popular destinations include Mount Tamalpais State Park, Camino Alto Preserve and Homestead Valley Land Trust.
This is an auto-generated description of Mill Valley.
Login or register to submit a custom description.
Links
Trail info last updated
Activities Click to view
- Mountain Bike
37 trails
- E-Bike
4 trails
- Gravel Bike
23 trails
- Adaptive Bike
12 trails
- Horse
37 trails
- Hike
82 trails
- Trail Running
82 trails
Region Details
- 15
- 1
- 10
- 10
- 1
Region Status
Open as of Sep 17, 2026
Stats
- Avg Trail Rating
- Trails (view details)
- 82
- Trails Mountain Bike
- 37
- Trails E-Bike
- 4
- Trails Gravel Bike
- 23
- Trails Adaptive Bike
- 12
- Trails Winter Fat Bike
- 2
- Trails Horse
- 37
- Trails Hike
- 82
- Trails Trail Running
- 82
- Total Distance
- 78 miles
- Total Descent
- 19,314 ft
- Total Vertical
- 2,034 ft
- Highest Trailhead
- 2,038 ft
- Reports
- 594
- Photos
- 96
- Completed Counter
- 28,880
Sub Regions
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Alto Bowl Preserve
- 1
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Camino Alto Preserve
- 2
- 2
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Horse Hill Preserve
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Mount Tamalpais State Park
- 5
- 6
- 1
Popular Mill Valley Mountain Biking Trails
• 95 ★ 3.7 • 3 miles • 209 ft • 1,507 •
Easy and fun wide single-track with some nice switchbacks going from HWY 1 down to Muir Beach. Nice trail to finish a ride with and end up at the Pelican Pub. Watch out for hikers/trail runners. Still inside the edge of the GGNRA so...
• 80 ★ 3.7 • 3 miles • 9 ft • 1,183 •
Great views, but very popular trail, especially on weekends. Watch out for lots of hikers.
• 100 ★ 4.0 • 584 ft • 0 ft • 540 •
Popular blue difficulty singletrack. This multi-use trail can be used both directions.
• 75 ★ 4.2 • 1 mile • 7 ft • 532 •
A Singletrack turning into a doubletrack that heads from Mountain Home Inn to downtown Mill Valley. Lots of hikers use it and expect to see a few bikers as well. Erosion is a large issue due to the lack of permits being issued for trail...
• 90 ★ 4.0 • 984 ft • 33 ft • 267 •
Popular green difficulty singletrack. This multi-use trail can be used both directions and has a easy overall physical rating with a 33 ft green climb. Trail visibility is always easy to follow. On average it takes 1 minutes to complete this trail.
• 85 ★ 2.8 • 2,612 ft • 11 ft • 195 •
Used to be singletrack now it is doubletrack it is like a fire road dusty and dry. Ride when wet, tacky, and grippy. Hikers and horses use the trail, too, so don't go too fast...
• 70 ★ 3.5 • 2,402 ft • 3 ft • 184 •
Popular green difficulty singletrack. This multi-use trail can be used downhill primary and has a easy overall physical rating with a 3 ft blue climb. Trail visibility is always easy to follow. On average it takes 2 minutes to complete this trail.
Mill Valley Mountain Bike Routes
★ 5.0 • 26 miles • 4,655 ft • 12 • Loop •
Extended version of Mt Tam Rounder route .. Loop begins and ends at Old Railroad Grade (West Blithedale...
★ 3.5 • 26 miles • 3,747 ft • 7 • Loop •
This is a great route to tour you through some of the best mountain biking in the Mt Tam area. It starts...
★ 5.0 • 21 miles • 4,082 ft • 5 •
Round the mountain loop that starts and ends on West Blithedale Ave. Trail types mostly fire roads and Mt...
★ 5.0 • 23 miles • 4,290 ft • 6 •
Loop route that starts and ends anywhere of West Blithedale Ave (WBA). Moderate to steep ascents and...
★ 5.0 • 19 miles • 3,329 ft • 7 • Loop •
Classic loop on the southern side and foothills of Mt Tamalpais. Cardiac ascents, white knuckle descents,...
★ 5.0 • 37 miles • 6,581 ft • 25 • Loop •
A cross country route that gives terrain to build both fitness and skills.
Photos of Mill Valley Mountain Bike
Videos of Mill Valley Mountain Bike
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Tenderfoot | Aug 26, 2026 @ 3:38pm (America/Los_Angeles) Aug 26, 2026 | Very Dry | chriscrisp | ||
| Easy Grade Trail | Aug 18, 2026 @ 7:21pm (America/Los_Angeles) Aug 18, 2026 | Ideal | scubasteve123412 | ||
| Dias Ridge Trail | Jul 19, 2026 @ 8:47pm (America/Los_Angeles) Jul 19, 2026 | Very Dry | skibike2006 | ||
| Alice Eastwood Road | May 21, 2026 @ 4:46pm (America/Los_Angeles) May 21, 2026 | Dry | awaite | ||
| Coast View Trail | May 4, 2026 @ 10:19am (America/Los_Angeles) May 4, 2026 | Dry | Studt | ||
| Willow Camp Extension to Shoreline Dr. | Jan 8, 2026 @ 9:54am (America/Los_Angeles) Jan 8, 2026 | Wet | chriscrisp | ||
| McKennan Gulch Trail | Jan 8, 2026 @ 9:54am (America/Los_Angeles) Jan 8, 2026 | Unknown | chriscrisp | ||
| Golf Course Singletrack | Sep 27, 2025 @ 3:58pm (America/Los_Angeles) Sep 27, 2025 | Dry | Bro-tato | ||
| Green Gulch Connector | Sep 22, 2025 @ 5:19pm (America/Los_Angeles) Sep 22, 2025 | Very Dry | Bro-tato | ||
| Dias Ridge / Miwok | Sep 22, 2025 @ 5:19pm (America/Los_Angeles) Sep 22, 2025 | Very Dry | Bro-tato |
Activity Feed
| username | action | type | title | date |
|---|---|---|---|---|
| weslayyyy | wishlist | route | activity #104536601 | Sep 24, 2026 @ 11:26pm 2 days |
| zgaBQb | wishlist | region | activity #104333195 | Sep 21, 2026 @ 10:53pm Sep 21, 2026 |
| BHbWHr | wishlist | route | activity #104302897 and 6 more | Sep 21, 2026 @ 11:44am Sep 21, 2026 |
| Bathymetry | wishlist | trail | activity #103710902 | Sep 13, 2026 @ 8:09am Sep 13, 2026 |
| bertha757 | ridden | trail | activity #103310463 | Sep 7, 2026 @ 5:09pm Sep 7, 2026 |
Recent Comments
| username | type | title | comment | date |
|---|---|---|---|---|
| trail | Be careful descending as the trail seems to be... | Aug 17, 2026 @ 3:36pm Aug 17, 2026 | ||
| trail | We should bring the heavy ebikes and... | Aug 3, 2026 @ 5:02pm Aug 3, 2026 | ||
| trail | Only a fire road for parts of it, and a lot of... | Jul 15, 2026 @ 7:55am Jul 15, 2026 | ||
| trail | I feel bad for my comments about the ruts,... | Jun 24, 2026 @ 8:46am Jun 24, 2026 | ||
| trail | Definitely has been plowed and is now a green... | Jun 15, 2026 @ 6:30pm Jun 15, 2026 |
Local Badges
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10 Blue Trails227 awarded -
Epic Ride Climb 2k1,120 awarded -
Climbing 10k Badge423 awarded -
Climbing 100k Badge37 awarded -
Epic Ride Descent 2k1,125 awarded -
Descent 10k Badge426 awarded
Local Mountain Biking Directory
-
Tam BikesBike Shop
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | activity logs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 37 | 31 miles | 9,072 ft | 18 miles | 2,011 ft | #2,666 | #957 | 94 | 591 | 19 | 38,352 | |
| E-Bike | 4 | 2 miles | 568 ft | 2 miles | 2,001 ft | #7,441 | #2,229 | 516 | 6 | 2,385 | ||
| Gravel Bike | 23 | 19 miles | 5,686 ft | 10 miles | 2,001 ft | #408 | #126 | 106 | 1 | 139 | ||
| Adaptive Bike | 12 | 10 miles | 1,601 ft | 5 miles | 1,775 ft | #3,967 | #938 | 187 | ||||
| Winter Fat Bike | 2 | 4 miles | 610 ft | 3 miles | 709 ft | #843 | #456 | |||||
| Horse | 37 | 38 miles | 7,543 ft | 20 miles | 2,034 ft | #1,329 | #736 | 69 | ||||
| Hike | 82 | 78 miles | 19,314 ft | 41 miles | 2,034 ft | #953 | #433 | 2 | 592 | 61 | 5,641 | |
| Trail Running | 82 | 78 miles | 19,314 ft | 41 miles | 2,034 ft | #2,267 | #708 | 592 | 58 | 3,117 |
Frequently Asked Questions
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What are the best places to ride in Mill Valley?
Mill Valley has 6 areas to explore for mountain biking. The top rated areas are:
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What are the highest rated mountain biking trails in Mill Valley?
The highest rated mountain biking trails in Mill Valley are:
- Tenderfoot (4.1/5)
- Octopus Trail (4/5)
- Monte Vista Trail (3.8/5)
- Val Vista Trail (3.8/5)
- Dias Ridge Trail (3.8/5)
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Where can I park to ride in Mill Valley?
There are 9 parking locations listed in Mill Valley. The most popular parking spots are: View all parking and trailhead locations on the map to plan your visit.
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What is the longest trail in Mill Valley?
The longest trail in Mill Valley is Coast View Trail at 2.8 miles. View all trails sorted by distance.
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What are the best & highest rated hiking trails in Mill Valley?
The best hiking trails in Mill Valley are: View all hiking trails sorted by popularity score.
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What are the best & highest rated trail running trails in Mill Valley?
The best trail running trails in Mill Valley are: View all trail running trails sorted by popularity score.
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How many trails are in Mill Valley?
Mill Valley has a total of 82 trails. Of those, 37 are designated for mountain biking. Browse top mountain biking trails in Mill Valley to find detailed information including difficulty ratings, distances, and trail conditions.
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Which trail has the most elevation gain in Mill Valley?
The trail with the most elevation gain in Mill Valley is Homestead Trail East with 269 ft of elevation gain. View all trails sorted by elevation gain.
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Which trail has the most elevation descent in Mill Valley?
The trail with the most elevation descent in Mill Valley is McKennan Gulch Trail with 1,699 ft of elevation descent. View all trails sorted by elevation descent.
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What activities are most popular in Mill Valley?
Mill Valley supports the following activities: Mountain Biking, E-Biking, Gravel Biking, Adaptive Biking, Horseback, Hiking, Trail Running.
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What bike services are there in Mill Valley?
The following bike services are available in Mill Valley:
- Bike Shop (1)
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What are the steepest mountain biking trails in Mill Valley?
The steepest mountain biking trail in Mill Valley is Homestead Trail East with an average grade of 6.9%. View all trails sorted by grade.
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What trails have the biggest jumps in Mill Valley?
The trails with the biggest jumps in Mill Valley are: Browse all mountain bike trails to find trails with jumps and technical features.
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Are the trails open in Mill Valley?
The overall region status for Mill Valley is Clear / Green. Out of 49 trails:
- Clear / Green: 42
- Minor Issue / Yellow: 6
- Closed: 1
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Can I ride an ebike in Mill Valley?
Yes, Mill Valley supports e-bike riding. There are 4 trails in Mill Valley that allow e-bikes. Check the e-bike trails listing for specific trail access details and any local regulations.
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What are the most popular mountain biking routes in Mill Valley?
The most popular mountain biking routes in Mill Valley are: View all mountain biking routes in Mill Valley.
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What is the highest summit in Mill Valley?
The highest summit in Mill Valley is Mount Tamalpais East Peak at 2,566 ft elevation.
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What are the most popular Strava Segments in Mill Valley?
The most popular Strava segments in Mill Valley are:
- Pin it (6,434 athletes)
- Rattlesnake Creek to West Point Inn (6,372 athletes)
- Old Stage Rd. (6,332 athletes)
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What trails are closed in Mill Valley?
There are currently 1 closed trails in Mill Valley. The breakdown of all trail statuses is:
- Clear / Green: 42
- Minor Issue / Yellow: 6
- Closed: 1
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Are there accessible or adaptive trails in Mill Valley?
Yes, there are 11 accessible/adaptive trails in Mill Valley. View all adaptive trails in Mill Valley for specific accessibility information.
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What are the most popular mountain biking trails in Mill Valley?
The most popular mountain biking trails in Mill Valley are: View all mountain biking trails sorted by popularity.
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What are the best beginner ride trails in Mill Valley?
The best beginner mountain biking trails in Mill Valley are:
- Dias Ridge Trail (3.7/5)
- Octopus Trail (4/5)
- Bob Middagh Trail (2.8/5)
Activities
Trails
- By canadaka
Trailforks & contributors - Admins: MTS
- #10847 - 17,156 views
- mill valley activity log | embed map of Mill Valley mountain bike trails | mill valley mountain biking points of interest polygons
Downloading of trail gps tracks in kml & gpx formats is enabled for Mill Valley.
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