I've got a lot of stuff on a work, so it's great to just head out of the house and not think about anything other than trying to put one foot in front of the other.
I'm going again tomorrow, and I'm just going to try and build up time on my feet rather than distance. Yesterday I did just over 20 minutes, and tomorrow I will try for 25 minutes. The next run will be 30 minutes, and then I'll stick at that for a week or two until I'm comfortable. The distance should take care of itself. I hope to be back up to sub 25 minute 5k in 10 weeks or so.
My fastest 10k (race) was 43:45, but I'm 5 years older now.