[Now, for 5k warmups I run 3 miles, do all my stretches and drills, then run 5 minutes tempo pace + strides, then I’m ready to roll.[/quote]
Interesting - this is almost exactly my routine! I jog the course, stretch, then jog the final 800m or so in reverse, turn around, and do strides on and off back to the start. I try to time it so that the race is starting with 2 minutes of me finishing the routine.