Looking for a quick, free, and family-friendly stop in Michigan’s Upper Peninsula? Au Train Beach is an underrated gem located right off the highway between Pictured Rocks National Lakeshore and Marquette. With a sandy shoreline, shallow water, and calm inlet pools created where the Au Train River meets Lake Superior, it’s one of the best places for kids to splash and swim. The river also makes the water feel warmer than most Lake Superior beaches, making this a perfect summer road trip stop for families exploring the UP.