| Langedijk to Orbetello | 768.34 mi (1,236.52 km) |
| Langedijk to Oria | 1,036.53 mi (1,668.13 km) |
| Langedijk to Oristano | 901.62 mi (1,451.02 km) |
| Langedijk to Orta Nova | 936.26 mi (1,506.77 km) |
| Langedijk to Orte | 789.62 mi (1,270.77 km) |
| Langedijk to Ortona | 841.95 mi (1,354.98 km) |
| Langedijk to Orvieto | 767.66 mi (1,235.43 km) |
| Langedijk to Orzinuovi | 554.73 mi (892.76 km) |
| Langedijk to Osimo | 750.98 mi (1,208.59 km) |
| Langedijk to Ospitaletto | 547.57 mi (881.23 km) |
| Langedijk to Ostuni | 1,021.42 mi (1,643.82 km) |
| Langedijk to Ottaviano | 935.98 mi (1,506.31 km) |
| Langedijk to Ovada | 583.39 mi (938.87 km) |
| Langedijk to Ozieri | 859.74 mi (1,383.62 km) |
| Langedijk to Paceco | 1,082.41 mi (1,741.97 km) |
