I am 42, and am only getting better with age and wisdom.
Running is about third or fourth on my priority list, but that's pretty high. I'm a busy guy. My family comes first. I've got a few great runners in the bunch - watch out for them!
Ran 20 along Wasatch - out to Fortuna and back. Felt good at 7.5 so attempted 5 miles at marathon pace. Had no way to track mile splits and I ended up running the 5 miles too fast - did it in 32 minutes - 6:24 pace instead of the 6:52 marathon pace. It made the rest of the run tougher and I was dragging the last few miles but I feel mentally strong and I know the run will help me - Boston is only 4 weeks and 2 days away!