DC/NoVa info request

I have an afternoon free and I'd like to ride the Mount Vernon bike path. Does anyone know if/where I can rent a bike somewhere near a metro stop and leave my luggage while I'm riding? My flight arrives DCA just after 1. I've always wanted to do that ride. Thanks :)

Try Wheel Nuts in old town Alexandria. You might be able to walk there from the Braddock Rd station. Or you could look into getting a Capital Bikeshare bike near Crystal City metro, though I think their bikes are a bit heavy.