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Access4Bikes (A4B)


A4B is all about getting fair and reasonable access for mountain bikers to the trails on our public lands in Marin. The reasons that access is currently so restricted are political in nature. A4B's 527 PAC exists in order to address these political reasons with political solutions, which include taking a direct role in trail access decisions by public land managers, electing officials who are willing to be fair about bike access, mobilizing mountain bikers to become a political force on their own behalf, and building an informed community of advocates for fair access.

Recently we formed our own 501c3 to focus on the hard work of stewarding our trails. Now that Marin Open Space is doing the hard work to create more riding opportunities we are now in a position to partner up and provide critical trail construction and maintenance help. Now its time for the Marin Water District to follow in Open Space's footprints and do the same.

There is a long way to go in Marin for mtb access but with Access4Bikes help and leadership we are getting there.

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Map Key

Featured Rides: 3

14.9 mi 23.9 km Lucas Valley Loop
Intermediate/Difficult
Lucas Valley-Marinwood, CA
Intermediate/Difficult
14.9 mi 23.9 km Lucas Valley-Marinwood, CA
Unknown
Update
16 
41.6 mi 67.0 km City Mouse, Cross Country Mouse (auto free)
Intermediate/Difficult
San Francisco, CA
Intermediate/Difficult
41.6 mi 67.0 km San Francisco, CA
Unknown
Update
30.4 mi 48.9 km To Tamarancho and Beyond (auto free)
Intermediate/Difficult
San Rafael, CA
Intermediate/Difficult
30.4 mi 48.9 km San Rafael, CA
Unknown
Update

Trails: 6

2.6 mi 4.2 km Big Rock Trail
Intermediate
Lucas Valley-Marinwood, CA
Intermediate
2.6 mi 4.2 km Lucas Valley-Marinwood, CA
Unknown
Update
7.1 mi 11.5 km Old Railroad Grade
Easy/Intermediate
Mill Valley, CA
Easy/Intermediate
7.1 mi 11.5 km Mill Valley, CA
All Clear
Update
Dry - Some loose gravel and rocky sections
32 days ago
13 
5.8 mi 9.4 km Eldridge Grade
Intermediate
Kentfield, CA
Intermediate
5.8 mi 9.4 km Kentfield, CA
All Clear
Update
Dry
85 days ago
10 
2.5 mi 4.0 km Blithedale Ridge Fire Road
Intermediate
Kentfield, CA
Intermediate
2.5 mi 4.0 km Kentfield, CA
All Clear
Update
Dry - Some loose gravel and rocky sections
32 days ago
0.5 mi 0.7 km Windy Ridge Trail
Easy/Intermediate
Kentfield, CA
Easy/Intermediate
0.5 mi 0.7 km Kentfield, CA
Unknown
Update
2.5 mi 4.1 km Loma Alta Fire Road
Intermediate
Lucas Valley-Marinwood, CA
Intermediate
2.5 mi 4.1 km Lucas Valley-Marinwood, CA
Unknown
Update