Web sites (primary)
                
                  - San Francisco
                    Bay Area Hiker
 
                  - Trail descriptions and reviews. Curated by Jan
                  Huber, each hike includes location of the trail head,
                  summary of the hike, detailed dtscriptions, and
                  photographs. Trail heads are shown as markers on a
                  Google map and organized in several searchable lists.
                  The site is well indexed by Google.
                  
 
                  - BayNature
- 
                  
  - 
                  I only recently discovered this site and I'm still
                  learning it's in and outs. The Trailfinder
                  allows you to search by length, difficulty, and
                  features. Searches can be constrained by distance from
                  a location. The site is very polished.
                  
 
                  
                  - gmap-pedometer.com
                  
 
                  - 
                  This site lets you draw a track on a Google Map and
                  provides information on the distance and elevation
                  covered. Very useful while trying to figure out a
                  new hike or a variation on one a documented hike.
                  
                  This started as a simple mashup showing some of the
                  cool functionality enabled by the Google Maps API.
                  However, recent changes have cluttered the layout to
                  make room for ads and the site can now be difficult to
                  use on a small (laptop) display.
                  
 
                  - 
                  TopOSM
                  
 
                  - 
                  This is a relief-shaded topographic map of the US overlayed with
                  geographic data from the
                  OpenStreetMap project.
                  
                  I prefer this site to the Google Maps Terrain layer for its shading,
                  clearer contour lines, and higher zoom levels.
                  
 
                  - 
                  OpenCycleMap
                  
 
                  - 
                  The Landscape layer at this site is my second favorite for on-line
                  topographic maps. The geographic data is also from the 
                  OpenStreetMap project.
                  
                  A particular advantage of the 
                  OpenCycleMap
                  is that it covers the whole world and not just the US. Off setting
                  that is that it has a lower elevation resolution than 
                  TopOSM. Note that the contour
                  lines and elevation marks are in meters.
                  
 
                
                
                
                Web sites (less used)
                
                These links are sites that I have used in the past, use
                intermittently, or simple note for future use.
                
                  - EveryTrail
 
                  - 
                  I was really excited by this site when it first
                  appeared. It is well integrated with an Android app
                  and it is easy to document your hike with uploaded
                  photos. However, when it changed to using Adobe Flash,
                  I largely quit using it.
                  
                  The site is still useful for finding hikes and the
                  guides can be quite detailed and informative.
                  
 
                  - 450 Hikes in
                    Bay Area, California
 
                  - 
                  This site purports to be A comprehensive guide to
                    hikes for every season and my initial reaction
                  is that it meets its goal. The hikes are organized
                  into categories that make it easy to browse for an
                  interesting hike. I haven't used this site much,
                  probably because it does not produce a lot of hits to
                  my Google search patterns.