abnormal?

i'm pretty sure your ass shouldn't chafe itself. but after my 3 mile run tonight, my crack is definitely chafed. i also acquired 3 new blisters from my five fingers (1 per mile?!)
and i suppose i should add that i'm taking on these lovely afflictions because i agreed to run a 10k road race...in two weeks. haha! yep, i can't remember the last time i ran 6 miles (its been over 3 years i'm almost sure) but what the hell!?!? might as well!