I expect 2021 to be similar to 2020, rando-wise (events postponed or only happening with reduced number of signup slots). It's going to be a while before things can go back to near normal here as Japan is not planning to approve the first vaccine until the end of February (2 months after the US and the EU), with the second vaccine not to follow until May or so. Somehow the government is still holding on to the plan that the 2020 Tokyo Olympics will go ahead in July/August 2021, as rescheduled last March.
I plan to ride a 200 km in March, followed by a Fleche on the first April weekend. I'm already signed up for the Fleche while signup for the 200 won't start until about 2 weeks from now.
I also want to ride 300 and 400 km events if they take place and if I can snag a sign up for one of the probably reduced number of slots, otherwise the plan is to keep riding one or more personal centuries every month of the year.