Hi, I'm a fairly new runner...WOW...that's the first time I called myself a runner!
I began running on the treadmill about 9 months ago when I got a free gym membership through the SilverSneakers program. I weighed 200 lbs. and since then, have dropped 20 lbs. My nieces encouraged me to train for a 5K and run it with them, although I knew they were seasoned runners. However, even that they asked me to consider doing it gave me confidence. I used the Couch-5k app on my phone. I ran my first 5K on St. Patty's day in Baltimore for the Kelly Shamrock run. I did it in a little under an hour. I felt like Rocky when I got to the finish line. I even had someone yell to me, "You go grandma"...I should have told her that it should be "You go great-grandma!" 
Since then, I've run 2 more---one a local run and the other was a Color Run this past weekend. Again, I did both in a little under an hour. I don't run for time or anybody else. I run for myself...it has become my therapy. SilverSneakers interviewed me for their program's news letter. Below is a link to the article:
http://www.healthwaysfit.com/article/silversneakers-member-success-story-ginny-yingst
I don't see me giving up running...running a 5K was on my bucket list and now I can cross that off.
Ginny