This is a link to my power curve. I’ve done some all out 15sec, 1 min, 3min, 5min efforts, but it’s data gathered largely from training and racing. This can show me where I need to make gains, and how I’m progressing.
For example, I knew this year I wanted to do a race with a 3 min climb and a 5 min climb to the finish. I did hill reps on similar hills to those in the race and saw the change in the curve over those duration of efforts. Got to the point that I was repeating the hills at almost exactly the same power every time in training, and come the race I smashed the 3 and 5 min power pbs on the hills I’d been training for.