If you are reasonably fit, get off the island circle route and into the center of Mackinac Island State Park. Fort Holmes is the highest point on Mackinac Island and arguably has the best views. We took an adult beverage and enjoyed the views. From there we took Rifle Range Road to Arch Rock, and then rode on almost deserted Leslie Ave. Great ride and no carriges to dodge. We rode the almost 2 mile downhill road to British Landing and then stopped for a swim in Lake Huron. Not wanting to ride along the shoreline, we walked our bikes up the steep gravel Forest Driveway, just south of BL. Ride past the golf course and the airport to Stonecliffe road. Make your way to West Bluff Road, past the beautiful mansions. You can ride to the Grand Hotel, but will have to turn around to get back to town.