Cape Cod is a very nice place to ride with a few bicycle trails. There are also a few campgrounds and a few hostels (including one in P-town). The northern part of Cape Cod is hilly (similar to 9W at NY to Bear Mountain) but it's not a hard place to ride. You can ride to CC from NY (the road is mostly nice with a few campgrounds along) or you can take a Chinatown bus to Boston.