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.
GPS & Other Running Tech. - whole bunch info for runners (inc. beginners), from Sarah R.
RunRepeat - reviews, by runners, of all kinds of running shoes, from Sadi K.
If you have any suggestions for additions, changes, deletions, etc., please contact Stan Jensen, PARC Membership Coordinator.