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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 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
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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
Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
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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 riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.
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Activities Click to view
- Mountain Bike
18 trails
- Horse
25 trails
- Hike
44 trails
- Trail Running
45 trails
Region Details
- 3
- 6
- 7
- 1
Region Status
Caution as of May 29, 2025
Stats
- Avg Trail Rating
- Trails (view details)
- 44
- Trails Mountain Bike
- 18
- Trails Horse
- 25
- Trails Hike
- 45
- Trails Trail Running
- 45
- Total Distance
- 54 miles
- Total Descent
- 13,990 ft
- Total Vertical
- 2,019 ft
- Highest Trailhead
- 2,038 ft
- Reports
- 377
- Photos
- 72
- Ridden Counter
- 18,977
Popular Mount Tamalpais State Park Trails
Mountain Bike Routes
| title | rating | distance |
|---|---|---|
| Mt Tam Epic | 26 miles | |
| Mt Tam Round the Dell | 26 miles | |
| Mt Tam Rounder | 21 miles | |
| Mt Tam Rounder | 23 miles | |
| Mt Tam Southern Face Loop | 19 miles | |
| ORH + Headlands | 37 miles | |
| Miwok to Middle Green Gulch - CCW Loop | 11 miles | |
| Mill Valley to Fairfax via Mt. Tam | 21 miles | |
| Coastal Epic | 22 miles | |
| Deer park / Coastal starting from Mill Valley | 19 miles |
Photos of Mount Tamalpais State Park Mountain Bike
trail: Bolinas Ridge Trail
18 |
Feb 24, 2025 @ 2:18pm
Feb 24, 2025
trail: Dias Ridge Trail
99 |
Jun 22, 2023 @ 1:33pm
Jun 22, 2023
trail: Dias Ridge Trail
92 |
Jun 22, 2023 @ 1:33pm
Jun 22, 2023
trail: Dias Ridge Trail
90 |
Jun 22, 2023 @ 1:33pm
Jun 22, 2023
trail: Dias Ridge Trail
100 |
Jun 22, 2023 @ 1:33pm
Jun 22, 2023
trail: Miwok Trail
74 |
Dec 23, 2022 @ 6:06pm
Dec 23, 2022
trail: Miwok Trail
83 |
Dec 23, 2022 @ 6:06pm
Dec 23, 2022
trail: Coast View Trail
193 |
Apr 2, 2022 @ 6:38pm
Apr 2, 2022Videos of Mount Tamalpais State Park Mountain Bike
trail: Willow Camp Fire Road
12:36 |
183 |
Jun 17, 2023 , Mill Valley
trail: Coast View Trail
10:15 |
686 |
Feb 8, 2022 , Mill Valley
trail: Coast View Trail
5:33 |
585 |
Jun 20, 2021 , Mill Valley
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Miwok Trail | May 29, 2025 @ 4:33pm May 29, 2025 | Dry | Bro-tato | ||
| Dias Ridge Trail (from Panoramic Highway) | May 29, 2025 @ 4:33pm May 29, 2025 | Dry | Bro-tato | ||
| Dias Ridge Trail | Feb 21, 2025 @ 2:22pm Feb 21, 2025 | Ideal | Runforcandy | ||
| Dias Ridge / Miwok | Feb 21, 2025 @ 2:22pm Feb 21, 2025 | Wet | Runforcandy | ||
| Coast View Trail | Nov 17, 2024 @ 1:54pm Nov 17, 2024 | Ideal | michaelbaker22 | ||
| Old Stage | Nov 17, 2024 @ 1:54pm Nov 17, 2024 | Variable | michaelbaker22 | ||
| Deer Park Fireroad | Dec 31, 2022 @ 11:56pm Dec 31, 2022 | Variable | Bro-tato | ||
| Alice Eastwood Road | Aug 16, 2021 @ 1:43pm Aug 16, 2021 | Dry | chriscrisp | ||
| Willow Camp Fire Road | Mar 7, 2021 @ 1:10pm Mar 7, 2021 | Dry | gillej | ||
| Monte Vista Trail | Jun 4, 2020 @ 9:30pm Jun 4, 2020 | Unknown | trailforks Trailforks |
Activity Feed
| username | action | type | title | date |
|---|---|---|---|---|
| tamalot | wishlist | trail | activity #74282951 | Jun 21, 2025 @ 2:49pm 1 hours |
| tamalot | ridden | trail | activity #74282866 and 3 more | Jun 21, 2025 @ 2:48pm 1 hours |
| gomarc | wishlist | route | activity #74254583 | Jun 21, 2025 @ 9:13am 7 hours |
| benreece | wishlist | route | activity #74105157 | Jun 19, 2025 @ 7:55am 2 days |
| 8WG0DdLw | wishlist | route | activity #73809488 | Jun 14, 2025 @ 11:18pm Jun 14, 2025 |
Recent Comments
| username | type | title | comment | date |
|---|---|---|---|---|
| trail | This would be a green trail if not for the... | Jun 10, 2025 @ 10:47am Jun 10, 2025 | ||
| trail | Agreed. I just rode this for the first time in... | Jun 10, 2025 @ 10:44am Jun 10, 2025 | ||
| report | Z , z zzz u big x | May 11, 2025 @ 1:45pm May 11, 2025 | ||
| trail | Extremely steep in places. | Apr 7, 2025 @ 9:51pm Apr 7, 2025 | ||
| trail | Poor condition and overgrown | Apr 7, 2025 @ 9:31pm Apr 7, 2025 |
Nearby Areas
| name | distance | ||||
|---|---|---|---|---|---|
| Blithedale Summit Open Space Preserve | 1 | 3.5 km | |||
| Baltimore Canyon and King Mountain Preserve | 3 | 1 | 3.5 km | ||
| Marin Municipal Water District | 3 | 5 | 3.8 km | ||
| Camino Alto Preserve | 7 | 2 | 4 km | ||
| Alto Bowl Preserve | 1 | 4.4 km |
Local Badges
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Completionist0 awarded
Local Mountain Biking Directory
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Tam BikesBike Shop
Local Products
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | ridelogs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 18 | 17 miles | 5,758 ft | 10 miles | 1,913 ft | #1,780 | #967 | 75 | 376 | 16 | 24,349 | |
| Horse | 25 | 17 miles | 4,406 ft | 10 miles | 2,005 ft | #79 | #67 | 47 | ||||
| Hike | 44 | 54 miles | 13,990 ft | 29 miles | 2,018 ft | #1,203 | #759 | 2 | 376 | 59 | 2,909 | |
| Trail Running | 45 | 54 miles | 13,990 ft | 29 miles | 2,018 ft | #1,208 | #753 | 376 | 56 | 1,881 |
- By fmogan77 & contributors
- Admins: A4B, A4B
- #5199 - 27,417 views
- mount tamalpais state park activity log | embed map of Mount Tamalpais State Park mountain bike trails | mount tamalpais state park mountain biking points of interest polygons
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