I have been organizing events for groups of people since 1998 in Paris. First only on inline skates, since 20056 on bikes as well, and since 3 years many more kind of group-events.
As part of my preparation for the season of 2013, I invite you to join me on a discovery of the Latin Quarter. March the 3rd. For free. :)
Afterwords you could play a game of Pétanque along the river Seine, with a view at the Notre Dame and Ile Saint-Louis. Or you just ‘hide’ in the café-resto next to it.