Here are some links to various running resources:
MidPeninsula Open Space Preserve - local trails
Running in the USA - calendar of up-coming events within 100 miles of SF
The Schedule - another directory of races
Sweat Tracker - yet another directory of local running events, this one looks quite complete and is easy to use
Run100s - information on ultra-marathons
SFTrails.com - 2015 Trail Racing Calendar for the San Francisco Bay Area
Trail Stompers - comprehensive online guide for trail running and hiking in the San Francisco Bay Area
Hiking Clubs in the San Francisco Bay Area - list of over 50 local hiking clubs, organizations and resources
Training Tips for Marathons - tips for beginners of the half- and full-marathon
How to Start Running - tips for beginners and joggers who want to start (and continue) running, by Kelly R.
If you have any suggestions for additions, changes, deletions, etc., please contact Stan Jensen, PARC Membership Coordinator.