I have finished C25K 
Can now run 5k moderately comfortably (well, I am still shattered but I can do it!) and working towards a 10k in November. Longest run to date is just over 5 miles. Started C25K end of May and NEVER thought I would be able to run for an hour or, weirder, that I would love it!
So hang in there - you are climbing the scale of awesome and WILL get there! 
Have done 1 park run and would like to do more - everyone was so lovely. There is a thread in Exercise about them.
I had a really good day today. Had birthday cake for someone in work but just kept it at one reasonably sized piece instead of going mad (I hear you Helga, it usually opens the floodgates big time), had someone compliment me on weight loss and went running after work.
It's days like today that I need to remember when I am feeling crap about myself!