So, I'm 64, well over weight BMI ~ 32 and I've been doing the C25K since April.
I used to run quite a lot and around 2000 did a couple of marathons however I think these, or probably training for these, are what put me off running for so long.
Slowly but surely I have made progress. Taking several actual weeks over each C25K week and I'm now facing week 5, run 3. It's the furthest I've got since April and a big step for me.
I seem to get so far then develop an injury. Usually pains in my calf which take me a while to get over before I start again.
I'm hoping I can consolidate for a week or two on week 5 and then move up to week 6 with the overall goal of doing the full 30 minute run before Christmas.