| Navan to Oria | 1,448.63 mi (2,331.35 km) |
| Navan to Oristano | 1,188.15 mi (1,912.14 km) |
| Navan to Orta Nova | 1,338.24 mi (2,153.69 km) |
| Navan to Orte | 1,165.26 mi (1,875.30 km) |
| Navan to Ortona | 1,240.70 mi (1,996.71 km) |
| Navan to Orvieto | 1,142.63 mi (1,838.88 km) |
| Navan to Orzinuovi | 934.46 mi (1,503.86 km) |
| Navan to Osimo | 1,152.36 mi (1,854.54 km) |
| Navan to Ospitaletto | 932.05 mi (1,499.99 km) |
| Navan to Ostuni | 1,435.09 mi (2,309.55 km) |
| Navan to Ottaviano | 1,320.10 mi (2,124.49 km) |
| Navan to Ovada | 927.99 mi (1,493.46 km) |
| Navan to Ozieri | 1,160.45 mi (1,867.56 km) |
| Navan to Paceco | 1,415.34 mi (2,277.77 km) |
| Navan to Pachino | 1,566.64 mi (2,521.26 km) |
