| Michigan City to Orbetello | 4,711.46 mi (7,582.35 km) |
| Michigan City to Oria | 5,053.81 mi (8,133.32 km) |
| Michigan City to Oristano | 4,708.00 mi (7,576.79 km) |
| Michigan City to Orta Nova | 4,940.18 mi (7,950.46 km) |
| Michigan City to Orte | 4,758.02 mi (7,657.30 km) |
| Michigan City to Ortona | 4,843.34 mi (7,794.60 km) |
| Michigan City to Orvieto | 4,736.02 mi (7,621.89 km) |
| Michigan City to Orzinuovi | 4,538.79 mi (7,304.48 km) |
| Michigan City to Osimo | 4,758.31 mi (7,657.76 km) |
| Michigan City to Ospitaletto | 4,538.07 mi (7,303.31 km) |
| Michigan City to Ostuni | 5,041.27 mi (8,113.14 km) |
| Michigan City to Ottaviano | 4,911.80 mi (7,904.77 km) |
| Michigan City to Ovada | 4,517.98 mi (7,270.98 km) |
| Michigan City to Ozieri | 4,697.29 mi (7,559.55 km) |
| Michigan City to Paceco | 4,957.37 mi (7,978.11 km) |
