One of my favorite carriage road bike trips in Acadia is the Sargent Mountain Loop. There are numerous ways to access this loop, my personal favorite is to start at the parking lot at the carriage house just up the hill from Northeast Harbor on the right – to me there is a little more downhill going this way around the loop, and the uphill portion is shorter but more strenuous. Either way involves a fair amount of biking uphill. It is also worth your while if you have the time and the energy to stop at one of the many trails you’ll pass leading up to the summit. There is a small pond up there that is a great place to take a quick swim ( watch out for the leeches) and interestingly you will be swimming in what is likely the first pond in Maine that existed as the glaciers retreated during the ice age; Sargent Mountain Pond first pond in Maine.