As city streets go, it's actually not that bad, outside of a few notable tricky intersections. It's pretty wide so even when there's heavy traffic, there's usually plenty of room for bikes between the right lane and the parked cars.

Lately though there's been tons of construction on it, which is what's made it really bad. All kinds of potholes, divots, lumps and irregularities, raised man holes and storms drains, and merging into one lane if the street's partially blocked.

Double parking in the Back Bay can get pretty bad though.