Charlie and PJ,
Interesting points mentioned. Would be very interested in hearing your thoughts on this:
What long term effects would be seen if athlete A followed a 10x300 tempo and athlete B followed a 3x10x100 tempo program?
I mix all sorts of distances with my soccer players to eliminate boredom really (similar to above). Our goal is 4000-5000m/session 3x week the last month prior to reporting to camp.