Marathon 2024-12-18 Roadnow click anywhere on map to find more poi nearby Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Marathon Port Huron, MI 8.19 mi Smiths Creek, MI 8.54 mi Saint Clair, MI 8.82 miInterstate highway exits close to Marathon Exit 266, i94 2.11 mi Exit 269, i94 4.96 mi Exit 271, i94 6.94 miInterstate highways close to Marathon i94 map 2.11 mi i69 map 6.97 mi i696mi map 58.42 miState roads close to Marathon MI 29 map 0.47 mi MI 136 map 12.52 mi MI 19 map 22.97 mi