New Year’s Day Cycling Route

I just moved to Tokyo and want to see the city by bike. I've got no plans for New Year's Day, and figured it would be a good chance to see the city in a lazy cruise, since traffic should be dead. Any recommendations about a route? I'm starting in Arakawa-ku. I would like the chance to see denser stuff that maybe would be less than accessible in periods of higher traffic. (I brought my bike with me)

by efngn