This TT course I am training for (and I live close enough that I get to train on the actual course) is ~40 minutes long.
I am just getting into shape and I've been doing it 2X a week, and basically just ramping up the watts each time until I figure out where I'm at (a really slow way to find my CP??).
Would I be better off hitting it a bit harder, and do it in 2 intervals? How much time do you give yourself for recovery between 20's?