Congrats.
To be able to run the end like that with calves cramping is impressive. I can fight most cramps but once the calfs cramp, it feels like I got shot and it becomes damage control.
I definitely paid for it in the week after. I actually have this problem after every 70.3 where my calves are just in extreme pain (well more soreness/tightness) for at least a week after racing. I try to stretch and stuff but I don’t ever get it except for post race. Not sure if it has something to do with the interaction of my bike fit and then running or if I have weird running form or something. Its a little bit frustrating because even when I want to get back to training it kind of limits me.