I did my first 200K last fall and loved it. I signed up for a 300K in May and I just realized it's March!!
I have been doing 3-4 days a week (1 hr ) on the rollers for the past few months. I feel confident that I could go do 100mi today but I am not sure about 300K. I need to ramp it up.
Should I just keep with the same I am doing but add in some long rides going from 4 hrs and adding an hour each week?