We recently did 5 x 1000's on a loop that's part of a recreational 5K course. The loop feature a quarter mile incline that rose about 30 feet and then dropped back down.
-3:20
-3:15
-3:12
-3:14
-3:08
My 5K PR is 17:14 and stayed with my friends who both have 5K PR's of 16:25.
The effort was good, and I finished giving about 90-95% effort.
HOWEVER, our coach gives us an entire 4:30 of rest, and after attending a college running camp over the summer and reading various bits of dialogue between others on this website, I came to knowledge that 4:30 may be quite a bit of time.
Thoughts, opinions, ideas? I'm open to any constructive criticism.