| Crossville to Orbetello | 4,881.87 mi (7,856.60 km) |
| Crossville to Oria | 5,232.95 mi (8,421.63 km) |
| Crossville to Oristano | 4,855.85 mi (7,814.73 km) |
| Crossville to Orta Nova | 5,117.80 mi (8,236.30 km) |
| Crossville to Orte | 4,931.96 mi (7,937.22 km) |
| Crossville to Ortona | 5,022.56 mi (8,083.04 km) |
| Crossville to Orvieto | 4,910.62 mi (7,902.88 km) |
| Crossville to Orzinuovi | 4,722.81 mi (7,600.62 km) |
| Crossville to Osimo | 4,941.14 mi (7,951.99 km) |
| Crossville to Ospitaletto | 4,723.35 mi (7,601.50 km) |
| Crossville to Ostuni | 5,221.48 mi (8,403.17 km) |
| Crossville to Ottaviano | 5,083.03 mi (8,180.34 km) |
| Crossville to Ovada | 4,694.09 mi (7,554.41 km) |
| Crossville to Ozieri | 4,850.40 mi (7,805.96 km) |
| Crossville to Paceco | 5,106.59 mi (8,218.26 km) |
