You can see from my profile that I'm 58, a bit overweight and that I started C25K in late July 2016. I graduated in late October but I didn't run 5k for another month and I was then and still am slow - 5k in 40 minutes. I struggled during the winter months but I kept going and I built up my stamina, now I'm Bridging to 10K (10k next week with any luck!)
I ran 6 miles for the first time yesterday (I'm happy to switch between kilometres and miles to encourage myself as necessary!) and later worked out how long its likely to take me before I can safely run 10m - possibly by mid June.
But if that's the case, what then? Will that be far enough? Should I keep increasing the mileage until it hurts and I have to stop? Once I can run 10 miles will I be satisfied running just 5 miles? I know these are just questions for myself and hopefully as I progress I'll find the answers but I was wondering what others have done.