| Muscle Shoals to Orbetello | 5,048.20 mi (8,124.30 km) |
| Muscle Shoals to Oria | 5,398.70 mi (8,688.37 km) |
| Muscle Shoals to Oristano | 5,023.61 mi (8,084.73 km) |
| Muscle Shoals to Orta Nova | 5,283.63 mi (8,503.19 km) |
| Muscle Shoals to Orte | 5,098.03 mi (8,204.49 km) |
| Muscle Shoals to Ortona | 5,188.22 mi (8,349.64 km) |
| Muscle Shoals to Orvieto | 5,076.63 mi (8,170.04 km) |
| Muscle Shoals to Orzinuovi | 4,887.90 mi (7,866.31 km) |
| Muscle Shoals to Osimo | 5,106.43 mi (8,218.01 km) |
| Muscle Shoals to Ospitaletto | 4,888.32 mi (7,867.00 km) |
| Muscle Shoals to Ostuni | 5,387.13 mi (8,669.75 km) |
| Muscle Shoals to Ottaviano | 5,249.37 mi (8,448.05 km) |
| Muscle Shoals to Ovada | 4,859.89 mi (7,821.24 km) |
| Muscle Shoals to Ozieri | 5,017.88 mi (8,075.50 km) |
| Muscle Shoals to Paceco | 5,274.35 mi (8,488.25 km) |
