Madison Av. Bridge > Grand Concourse > Van Cortlandt Park E. > Bronx River Rd. > California > Lake shore > Stratton > Pinebrook > Forest > into Mamaroneck. Palmer > Pelham Rd. > City Island Rd. Seafood/Ice cream. Pelham Parkway > Service Rd. > Mosholu Greenway > Sedgwick > Heath > W. Kingsbridge > Broadway > 218th > Seaman > Broadway > Bennet > Ft. Washington > Riverside.
Go out through Westchester and enjoy a quick stop at the beach (or lunch) in Mamaroneck. Then cruise back to City Island for seafood (or ice cream). An urban route brings you back to Manhattan.