Is my outdoor VO2max workout effective long-term?

[GoLongThenGoHome]

@Chain_of_Fools

My other caveat is that at ~120% FTP I get up it in almost exactly 4 minutes. That makes for a pretty solid VO2 effort

I’ve got a quiet local hill, that’s fairly steady at 6.2%. My personal best is 3 mins 27 secs and all efforts end up being between that and 4 mins. Again perfect for VO2 max. I tend to just go as hard as I can manage on the day, with the first interval working to calibrate my effort.