I'm not really 100% sure this is accurate, because I asked him this morning while I was still waking up and more than a little groggy. But I think he told me he finished in 29th place, out of 47 boys. Pretty awesome, I think!
Edited to add:
Turns out he was actually in 27th place! Even better! :) Not surprisingly, all of his soccer teammates did really well. Lots of practice running, lol!