In an infinite universe, the one thing sentient life cannot afford to have is a sense of proportion
The voice of mile 18
I've got a fever...
Easy/Long E/L 10:08
Marathon M 8:43
Threshold T 8:10
Interval I 7:32
This table shows the recommended running training paces for someone with a current vdot of 40.2. For more information about the types of training referenced, see here.
These values are derived from Daniels' Running Formula, 2nd edition. Note that the new E/L paces are slightly slower than recommended in previous editions.
On your deathbed, you won't wish that you'd spent more time at the office. But you will wish that you'd spent more time running. Because if you had, you wouldn't be on your deathbed.
But... it sure feels like jogging at a 10:00+ pace is not really going to do much for my fitness.