Scenic route through Westchester with several nice climbs. Challenging but do-able as a B ride. The Grassy Spain return continues the hills; the Tarrytown return is shorter and a bit flatter, plus has MetroNorth bailouts in case of bad weather. Train to White Plains station to start the ride, or do a standard route to White Plains to make it an 85 mile ride. RWGPS and pdf cue sheet for Tarrytown return differ slightly from original cue sheet.