Marathon, Canada offers 11 beaches perfect for sunbathing, surfing, swimming, and more. Marathon, Ontario, Canada, is known for Pukaskwa National Park and its stunning Lake Superior shoreline. The best time to travel to Marathon, Canada, is during the summer months of June to August, when the average air temperature is around 15-20°C (59-68°F) and the water temperature in Lake Superior is approximately 10-15°C (50-59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
