I'm a 400/800 meter runner who does x-country to build my stamina for the track season. I'm not especially good at x-country. The thing I can't figure out is why I'm faster when I fartlek than when I race. I swear it makes no sense. We have a staple 3 miles fartlek when we run .15 miles hard and then .10 miles easy. I usually run about 6:00 pace with the .15 being pretty speedy and the .10 super slow jog. When I race the 3 mile distance I can only run about 6:15 pace. There is something about the .10 mile rest that lets me catch my breath. When I run even pace I just crash hard. Any other 800 meter guys have this experience? Is it just psychological?