I seem to be having trouble during tempo runs to keep the warmup as a warmup. Come to think of it, I always have trouble not pushing it durnig warmups! Today's plan was to run 1 mile slow, then 5 miles at tempo pace. In the end, I ran it too fast, walked a bit in the middle miles, then pushed it at the end.

Splits
Mile 1: 9:18/mi
Mile 2: 9:13/mi
Mile 3: 9:32/mi
Mile 4: 9:59/mi
Mile 5: 10:14/mi
Mile 6: 8:53/mi
6 miles, 57:11, 9:32/mi average, 734 calories burned
I walked the rest of the way back to work, ending 6.2 miles in 1:02. It's nice to be able to run 6 miles in under an hour again! Endurance obviously needs some work.