Originally Posted by
OldsCOOL
I have a 13.4mi course with one big hill and plenty of false flats. Every gear one my 2x14 is used at some point. Cadence is approx 65-85 in this course.
Then there is the flat 4mi that is hammer-til-you-cant. That's a fun one where I will use that upper end cadence of 85 and keep stretching for the next gear.

OTOH, I TT best at 94-96 cadence. I obviously can put out the most power at those cadences. Higher cadences put a greater load on my CV system, but all the same I can hold the watts longer up there than at a lower cadence. You might practice that and see if it's true for you too. 4 miles is pretty short. When it gets up to 10 miles it really makes a difference. When I'm just riding, I don't pedal that fast, though.