West side of the GW Bridge (start)> sidewalk, east side of Hudson Terrace/Rt 505, south> bike path, east side of Hudson Terrace/Rt 505, south> River Road/Henry Hudson Drive > Alpine Police Station, Palisades Interstate Park (restrooms, water, turn around point)> River Road/Henry Hudson Drive> bike path, sidewalk, east side of Hudson Terrace/Rt 505, north> sidewalk, east side of Hudson Terrace/Rt 505, north> west side of the GW Bridge (end)