After moving back to the San Francisco Bay Area in 1997, I discovered the Bay Area Ridge Trail and spent several months hiking all of that. Over the next few years I hiked all the rest of the trail systems linking to the ridge trail, averaging 200-250 miles a year on day hikes that range from 6 miles when excessively steep, 12 when moderate, and the occasional 20 mile all day outing.

In 2001 I started photographing the hikes (see all the old links below the map), and in 2006 started digitizing them, taking advantage of a long stretch of semi-employment with access to GIS software. The large image shows the scope of the work, and I believe this is the most comprehensive trails layer publicly available of the nine Bay Area counties. The links offer some regional details, and you can also download a .kmz file of the hikes and fly around in Google Earth and check them out.  SF Bay Area Trails KMZ

In 2008 I hit 350 miles in one year, 366 in 2009, and keep surpassing with each year, hitting 380 in 2011.

East Bay 1

East Bay 2

North Bay 1

North Bay 2

Peninsula

South Bay 1

South Bay 2



About the Routes: Heads-up digitized in 2006-2007 from various regional park maps and commercial trail maps, using 2 meter aerial photography, USGS quad sheets, Tele-Atlas and GDT road data, and field verified the existence and connectivity of the trails by walking them. Individual arcs are not named by trail. The name field represents a single day hike with an arbitrary name. The label field is a concatenation of name and miles. Mileage figure is based on arc length. In the original geodatabase the arcs are classified by 1 for loops and traverses, and 2 for in-out trails, multiplied accordingly, and summarized and dissolved in the final KMZ file.


About the Photos: Some of the older photos are taken before I got a digital camera, and are sized under 100 KB for old school dial-up viewers, so they are looking a little dated. Most are newer and more enjoyable.

Mount Diablo
Adventures

Mount Tamalpias
Adventures

Marin County
Adventures

EBMUD Watershed
Adventures

 

Sibley/
Hidden Valley

Briones
Regional Park

Wildcat
Canyon

Las
Trampas

Pleasanton
Ridge

Sunol
Regional Park

Olompali/
Mt. Burdell

Mt. St.
Helena

Mission
Peak

San Bruno
Bog Trail

Alum Rock
Canyon

Annadel
State Park

Black Diamond
Mines

Morgan
Territory

Down the
Peninsula

Shell
Ridge

Alhambra
Lost Trails

Garin/
Dry Creek

The Rose Peak Death March



Other Non-Bay Area Hikes and Trips


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