I thought I might be lucky and not be that sore from soccer yesterday, turns out my hamstrings were just too damn tired to be sore, they had no power. But I was on my own and on trails, so I could go as slow as I pleased (meaning I couldn't go much faster). The trails were still very sloppy, but I'm learning where to run and could probably go on a decent trail run now while avoiding the flooded areas.
Also ran into Joe Brown afterwards (Ankeny HS runner several years older than me, now really into relays and ultras). I'd forgotten he lives in CF, might have to start running with him.