We're going to try biking some of the DownEast Sunrise Trail this summer and fall. Schoodic Woods instead of the MDI part of the park too. No Cadillac Mt or Sand Beach on the one hand, but virtually 0 crowds on the other. Stunning views of Cadillac Mt from across Mt Desert Nrrows
Where we live is just too hilly to bicycle without exhausting ourselves in short order.
Those trails based on old railways tend to be more level and better suited for a lower impact ride.
Safe travels and soaking up nature!