I am a little unclear on the scale that is used when estimating TSS for outdoor rides without power (I’ve yet to throw down the cash for a power meter on the MTB). I think this is the same scale that is also used in plan builder to estimate TSS for a race. I personally feel it would be easier to use if I was entering in my perceived power zone. With a lot of time on the trainer, I am pretty used to what “sweet spot” or “Endurance” power zones feel like, but I have no idea how exactly that is supposed to match up to these ratings:
5-Tempo (ok, that one sounds nice and familiar)
Notice that there are 10 intensity ratings, but only 7 power zones:
Has anyone seen a chart or something that helps clarify how these two ratings relate?