Island Bike Loop

Cycling the road that circles Mackinac Island is the activity that most visitors call their favorite thing about the trip. The road is M-185, and it is often described as the only state highway in the United States with no motor vehicles allowed. It runs about 8.2 miles around the island's edge, hugging Lake Huron on one side and wooded bluffs on the other, and it is mostly flat, which makes it friendly for families and casual riders. You pass limestone formations, small beaches, picnic pull-offs and views across the water to the Upper Peninsula and the Mackinac Bridge. The paid product here is a self-guided cycling audio tour. You supply the bike, rented from one of the many shops near the ferry docks, and the audio guide narrates the loop on your phone with stories about island history, geology and landmarks as you ride. That works well for visitors who like the freedom of their own pace but want more context than a map provides. It is also lower in cost than a guided group ride, and you can pause when something catches your eye. Most people ride clockwise or counterclockwise from downtown and finish in about an hour if they hardly stop, but a more realistic plan is two to three hours with photo stops, a snack and time on a beach or at Arch Rock.

Bike rentals are plentiful in town, with standard bikes, kids' bikes, tandems, child trailers and electric bikes available from several shops. Arrive early in peak summer to get the best selection, check brakes and tire pressure, and ask for a helmet. Electric bikes can help riders who want less effort on the few gentle hills, though they are not necessary for the shoreline road itself. Traffic on the loop includes bicycles, pedestrians and horse-drawn wagons, so keep right, slow for horses and listen for bells.

Along the way, notable pauses include British Landing on the northwest side, where British troops came ashore in 1812, small beaches that are ideal for skipping stones, and Arch Rock on the east side, where stairs lead up from the road to a natural limestone bridge. There are picnic tables at several spots, and the road passes seasonal food stands in a few places. Pack water, sunscreen and a light layer, because the breeze off the lake can be cool even in summer.

Do not forget that you are sharing the island with horses. Never ride up behind a horse at speed, and give carriages room to pass. If you ride with children, the loop is a good fit for ages around six and up, while younger kids may do better in a trailer. If rain arrives, the road is still rideable but can be slick, and the island's cafes make good shelters.

The best time is morning or late afternoon in summer, when light is soft and the road is less crowded. September is a favorite for many riders, with cooler air and thinner crowds, though some businesses begin to close for the season. Winter riding is a different matter, since services are limited and the road is frozen. Combine the loop with a fudge stop and a visit to the state park viewpoints for a full day.