Some of you may remember me, but I haven't been around here in awhile...Still riding my bike though.
About 6 weeks ago my wife encouraged me to start jogging. This weekend I completed my first 5K without walking. I am in my mid 40's, mid-300's and I haven't run in over 20 years, so it is possible. I used this program and it worked out great: http://www.coolrunning.com/engine/2/2_3/181.shtml
Just thought I'd share in case someone was thinking about adding jogging to their routine.
Good luck and best wishes, Clydes!