16 mile run and feeling fine

A nice easy 16 miler. I picked up the pace a little on the last 4 miles and felt great. I feel that I am gaining some aerobic fitness that I need in order to be competitive in the local upcoming college track meets. Its not easy being 40 and racing 20 year olds. However, I plan to change my last statement and say its can't be easy being 20 and getting owned by a 40 year old.