| Ostrow Mazowiecka to Naron | 1,510.37 mi (2,430.70 km) |
| Ostrow Mazowiecka to Navalcarnero | 1,491.46 mi (2,400.28 km) |
| Ostrow Mazowiecka to Navalmoral de la Mata | 1,568.10 mi (2,523.62 km) |
| Ostrow Mazowiecka to Nerja | 1,665.56 mi (2,680.46 km) |
| Ostrow Mazowiecka to Nigran | 1,595.29 mi (2,567.37 km) |
| Ostrow Mazowiecka to Nijar | 1,594.73 mi (2,566.47 km) |
| Ostrow Mazowiecka to Novelda | 1,469.31 mi (2,364.62 km) |
| Ostrow Mazowiecka to Noya | 1,571.48 mi (2,529.05 km) |
| Ostrow Mazowiecka to Nules | 1,371.04 mi (2,206.47 km) |
| Ostrow Mazowiecka to Ocana | 1,487.90 mi (2,394.55 km) |
| Ostrow Mazowiecka to Ogijares | 1,636.10 mi (2,633.05 km) |
| Ostrow Mazowiecka to Oleiros | 1,525.90 mi (2,455.70 km) |
| Ostrow Mazowiecka to Olesa de Montserrat | 1,212.46 mi (1,951.27 km) |
| Ostrow Mazowiecka to Oliva | 1,418.58 mi (2,282.98 km) |
| Ostrow Mazowiecka to Olivares | 1,713.60 mi (2,757.78 km) |
