When using TrainNow… for example, when letting it just pick randomly for the day, if it selects sweet spot for you and you’ve selected 60 minutes by default, will the function suggest 75 minutes or maybe 90 minutes if you’ve progressed your sweet spot past the 60 minute mark?
If it’s always trying to progress you, and it runs out of 60 minute workouts to do so… would it drop the 60 minute session onto your calendar then suggest a swap to a longer ride?
Don’t think so. TrainNow is set up in a way that you tell it exactly how much time you currently have available and it tries to pick the best workout for you within that constraint and with your training history so far.
With that assumption in mind, it wouldn’t make sense for it to suggest longer or shorter workouts.
Instead you could select an AI workout, those can change duration, but you’ll manually have to select the zone. AFAIK there’s no feature which does select both, time and workout zone, automatically
I think you choose the workout, scroll down to alternates and in the drop down menu select longer.
But that removed the original attribute of it being the likely best workout, doesn’t it? It’ll only be a workout similar to that one, that’s longer. Probably not much worse, but possibly not ideal by assertion of the AI
I’ve just completed a SS workout that I did through train now… selected 1 hour, it was so crammed with SS intervals I basically did 50 minutes of SS in the hour, felt more taxing than the 90 minute SS I did a week or so ago.
I’m going to be jumping onto a TR plan in a couple weeks anyway but I’ve been doing TrainNow to get back into some structure before I commit, I also suspect my FTP is set too high by the AI and I want to do a bit of everything and survey them correctly to lock in at the right FTP.
That SS session felt too much like threshold work towards the end, so I’m going to keep doing some TrainNow until my FTP settles.
Seems odd to me that TrainNow would look at progression levels of SS and not try to suggest an extra 15/30 minutes if I wanted to do SS, otherwise it would just have me repeating the highest progression levels SS 1 hour workout over and over?
An alternative would be to start a plan and let TR AI do its work and adapt it appropriately. I figure since it adapts and can always be edited I’m not locked into something cast in stone.
Train now wouldn’t give you longer sessions than what you have asked for. Maybe a feature that could be added is suggesting different length alternatives 
How did you rate that session?
4… because I completed it without any stopping or reduced intensity but it definitely wasn’t sweet spot
And yes I agree… it should almost warn me to say ‘ok you can do one hour sweet spot but for progression purposes, you should really look at 90 minutes’