running

i have been running some fun races lately. it seems i have found a joy in running by not having any goals set out for myself. My workouts are sporadic and variable. sometimes fast sometimes slow... whatever im in the mood for. i have done way less formal training compared to when i ran in college and i take a lot more rest days. some of my recent times from this year:
5 miles in 30:04
Bolder Boulder 10k in 39:39 (at high altitude)
1500 meters in 4:38
800 meters in 2:12