Kevin’s fine; there was no issue with his semi-functional kidney becoming less-functional. This appeared to be another micro-stone, something that wouldn’t give any of us any issues, but causes havoc with Kevin’s multiple-times-spliced-and-diced internal plumbing.
The good thing about scrapping the regular ride? More Strava PRs! It’s almost impossible for me to get any PRs on the usual coastal loops; I’ve done them so often, for so long, that I’d really have to put in an extraordinary effort. Or turn back the clock a few years. But put me back on flatter terrain and shorter Strava segments, and I can do something. Strange to think I do a lot more riding on roads further from home than closer.