I recently was bit by the running bug but I have some great mental block about running alone and much prefer looking forward to group runs.
I used meetup.com and found 2 great running groups in my area (Los Angeles).
San Diego Track Club - http://www.sdtc.com/
Meetup.com San Diego - http://running.meetup.com/134/
I run weekly and there are a group of us that run anywhere from Cardiff to Oceanside...