I am used to %LT, %HR, %VO2. I think the disconnect comes in the duration you are used to. A 15min race is considered a sprint in cycling, although still highly aerobic. The lack of penalty for added mass on flats just doesn't give the little guys a chance...

Anyway, I'm not necessarily looking for how to structure a week of training. I guess what I'm after is a more general direction to go given a high end CV starting point but weak legs. I can piece together some specific workouts based on that direction and google.

Lmaster, I just saw your other thread. looks like we are in the same boat.

Edit: I'll certainly check out the tri forums.

Edit2: yes a sub hour 40k would be nice. I've got the fuel delivery, just need the engine.