| East Ridge to Orbetello | 4,932.21 mi (7,937.63 km) |
| East Ridge to Oria | 5,284.10 mi (8,503.93 km) |
| East Ridge to Oristano | 4,903.51 mi (7,891.43 km) |
| East Ridge to Orta Nova | 5,168.84 mi (8,318.44 km) |
| East Ridge to Orte | 4,982.69 mi (8,018.86 km) |
| East Ridge to Ortona | 5,073.85 mi (8,165.57 km) |
| East Ridge to Orvieto | 4,961.43 mi (7,984.65 km) |
| East Ridge to Orzinuovi | 4,774.83 mi (7,684.34 km) |
| East Ridge to Osimo | 4,992.88 mi (8,035.27 km) |
| East Ridge to Ospitaletto | 4,775.52 mi (7,685.45 km) |
| East Ridge to Ostuni | 5,272.76 mi (8,485.68 km) |
| East Ridge to Ottaviano | 5,133.34 mi (8,261.31 km) |
| East Ridge to Ovada | 4,745.23 mi (7,636.70 km) |
| East Ridge to Ozieri | 4,898.70 mi (7,883.70 km) |
| East Ridge to Paceco | 5,154.24 mi (8,294.94 km) |
