| Ostrow Mazowiecka to Mikkeli | 645.21 mi (1,038.36 km) |
| Ostrow Mazowiecka to Mikkelin Maalaiskunta | 644.10 mi (1,036.58 km) |
| Ostrow Mazowiecka to Muhos | 841.57 mi (1,354.38 km) |
| Ostrow Mazowiecka to Muurame | 659.37 mi (1,061.15 km) |
| Ostrow Mazowiecka to Naantali | 529.74 mi (852.54 km) |
| Ostrow Mazowiecka to Narpes | 668.23 mi (1,075.41 km) |
| Ostrow Mazowiecka to Nastola | 583.06 mi (938.35 km) |
| Ostrow Mazowiecka to Nivala | 776.47 mi (1,249.61 km) |
| Ostrow Mazowiecka to Nokia | 602.47 mi (969.58 km) |
| Ostrow Mazowiecka to Nurmijarvi | 540.99 mi (870.64 km) |
| Ostrow Mazowiecka to Nurmo | 693.83 mi (1,116.60 km) |
| Ostrow Mazowiecka to Orimattila | 571.49 mi (919.72 km) |
| Ostrow Mazowiecka to Orivesi | 619.94 mi (997.70 km) |
| Ostrow Mazowiecka to Oulu | 853.15 mi (1,373.02 km) |
| Ostrow Mazowiecka to Oulunsalo | 847.37 mi (1,363.70 km) |
