You could ride up to Ward Pond Ridge or look into Fahnstock (may have been renamed). I think Fahnstock has camping. Look into Bear Mountain. You may need a train pass for the Metro North Train (i think they are free). Keep in mind that not all Amtrack trains have baggage cars for bicycles, so coming back by train from Canada may pose a problem. You could take the North & South County trails as far North as possible, and head east towards Southbury Ct to Kettletown State Park for camping