So having done a few Parkruns and the NHS C25K+ podcasts, I decided to just step it up a little beyond 5k.
I spent some time on onthegomap.com which is rather better for planning than the Google Maps measurement tool (though a little idiosyncratic). I worked out a circuit that was 5.68km in length so just over 10% longer. I went out after dark (which I kind of like doing).
I think it was the most enjoyable run I've done so far! I took it at a pretty relaxed pace, and completed the 5.68 in 43 minutes, and didn't get out of breath at all. Could I have continued to 6k? Hell, yes! I didn't really want to stop when I got back home.
The Spotify Runner's Club 160 bpm playlist seemed to power me through with a large number of classic songs - the best probably from the feel good factor being In the Mood by Glenn Miller. Also "I'm a believer" and "Paint it Black" were great to chug along to.
I'm not sure if I'll do the running plan, rather than just gradually increase the distance. I've already got a 6.2 km circuit worked out as a slight amendment to tonight's run. But I might just repeat this one first.