As near as I can tell from a tiny picture of the route, there's an approximately 1/2 miles stretch on cobbles that are big enough to make you bounce inside your car. Other than that, all I'd really worry about (besides traffic, of course) is curb-side grates and glass. I've never noticed much pothole trouble when driving in B'more, and hopefully they'll clean the gutters before that morning. If I do the ride, I'll probably pedal with one foot clipped and one foot not, just in case

It looks like a fun route, seeing as how it goes through Patterson Park, around Federal Hill, and to Fort McHenry and back. It hits some cool neighborhoods. It's just too bad it doesn't swing up to the Westminster burial ground so the riders could wave at Eddie A. Poe!