Hub on Wheels riders line up at City Hall Plaza --photo: Josh Campbell--
--photo: Doug Mink--
Spirits were high despite the rain --photo: Josh Campbell--
Steve Miller addresses the riders --photo: Josh Campbell--
Mayor Menino officially kicks off the 5th annual Hub On Wheels --photo: Josh Campbell--
And they're off! --photo: Josh Campbell--
Hub takes over Storrow Drive --photo: Josh Campbell--
--photo: Josh Campbell--
This year's youngest Hub rider? --photo: Josh Campbell--
The bike taxis were out in force --photo: Josh Campbell--
the TD Bank cheering team --photo: Josh Campbell--
Riders return to City Hall Plaza --photo: Josh Campbell--
Mayor Menino chats with riders --photo: Josh Campbell--
Urban Adventours was only one of the many booths at the Expo on City Hall Plaza --photo: Josh Campbell--
Wheelworks was doing on-site repairs --photo: Josh Campbell--
Boston Bikes summer intern Tess Wise holds down the merchandise tent --photo: Josh Campbell--
