Knackered by the end of a TT, but not according to the stats

https://www.xertonline.com/activities/9jzttlrnesrxsekw

This is a 25mile TT, my second attempt this month, similar MPA profile to the previous attempt, went a little bit deeper on the out leg as I now knew that the return leg was more downhill and had a tail wind. Kept trying to push on the return but there was little left in the tank, the last couple of minutes were horrible, the steepest climb up to a junction (only 20ft though) and the end had moved by 100m or so, I had very little left at that point.

I switched to the xert app in the last 3ish mile and could see that I was 50s from TTE @500W, and could barely hold enough power to make that reduce.

What am I missing, why do I appear to have reserves that I don’t seem to have in reality.

A mid week TT last week had a curve that followed what I felt, I hit the hill and was worn out, but could still push a little beyond that. Xert - Login

Two things come to mind

  1. Massive difficulty score (huge effort so well done) is likely why you ‘failed’ to breakthrough - cannot be maintained for long if signature is correct
  2. The effort is very long and I’m not sure if it’s impossible (think so) to get a breakthrough on the line in an effort over an hour… unlikely you can hold TP for an hour (look at your power curve) let alone exceed it (which is needed for a BT. You can get a BT after an hour but that requires the opposite pacing strategy I.e. riding harder / above TP in the second half and below TP in the first half. Not what you want from a a speed perspective

I think in a shorter effort you could a breakthrough given the high difficulty score, if that’s your goal. Pacing looks pretty good though

Thanks, and thanks :slight_smile: .

I would have expected the MPA line to be at least decending/stable given the lack of extra ommph. On the second TT example, only 13miles, I could punch through at the end, but only because it was a steep incline, so I kind of had to or stall out.

However that has had me look at average power, and compared to threshold, very very close, a little lower, but then it was a little over an hour, so I probably was in the ball park of what could be achieved.