Road bike ride in the Boston area

if it is not raining, I plan to do a 30 mile road bike ride on Memorial Day. The exact route is TBD until I get there, but it will be about 30 miles at about 14 mph. The trip will probably be out thru Dover which is a great cycling area. We will leave from Bostons Hyde Park neighborhood, the Bajko Ice Rink parking lot. We willoeavevthe lot by 10:15 and be back by 2.