Well No - the zone 2 rides indoors could be shorter - there are plenty of the 2 -2.5 hour versions - can’t you go outside? - summer is nearly here in the UK and I have more time so I’m riding outside as much as possible especially as I am taking a break from structure as there is no racing - come next winter or if we get racing I will be back on the structured TR sessions - for now it is sunny zone 2 to top up my Vitamin D and mental health! 
1 Like