| Nedre Eiker to Orbetello | 1,198.11 mi (1,928.17 km) |
| Nedre Eiker to Oria | 1,370.85 mi (2,206.17 km) |
| Nedre Eiker to Oristano | 1,373.54 mi (2,210.50 km) |
| Nedre Eiker to Orta Nova | 1,296.69 mi (2,086.81 km) |
| Nedre Eiker to Orte | 1,199.78 mi (1,930.86 km) |
| Nedre Eiker to Ortona | 1,217.45 mi (1,959.29 km) |
| Nedre Eiker to Orvieto | 1,181.07 mi (1,900.75 km) |
| Nedre Eiker to Orzinuovi | 992.51 mi (1,597.30 km) |
| Nedre Eiker to Osimo | 1,134.25 mi (1,825.40 km) |
| Nedre Eiker to Ospitaletto | 981.78 mi (1,580.02 km) |
| Nedre Eiker to Ostuni | 1,354.53 mi (2,179.90 km) |
| Nedre Eiker to Ottaviano | 1,320.79 mi (2,125.61 km) |
| Nedre Eiker to Ovada | 1,046.66 mi (1,684.44 km) |
| Nedre Eiker to Ozieri | 1,325.94 mi (2,133.89 km) |
| Nedre Eiker to Paceco | 1,509.03 mi (2,428.55 km) |
