| Ostrow Mazowiecka to Nordwalde | 608.18 mi (978.77 km) |
| Ostrow Mazowiecka to Northeim | 508.32 mi (818.06 km) |
| Ostrow Mazowiecka to Norvenich | 664.74 mi (1,069.79 km) |
| Ostrow Mazowiecka to Nossen | 385.59 mi (620.55 km) |
| Ostrow Mazowiecka to Nottuln | 615.59 mi (990.70 km) |
| Ostrow Mazowiecka to Numbrecht | 625.46 mi (1,006.58 km) |
| Ostrow Mazowiecka to Nuremberg | 522.43 mi (840.78 km) |
| Ostrow Mazowiecka to Nurtingen | 619.40 mi (996.82 km) |
| Ostrow Mazowiecka to Nussloch | 620.57 mi (998.71 km) |
| Ostrow Mazowiecka to Ober-Ramstadt | 602.68 mi (969.92 km) |
| Ostrow Mazowiecka to Oberasbach | 528.17 mi (850.01 km) |
| Ostrow Mazowiecka to Oberderdingen | 624.91 mi (1,005.70 km) |
| Ostrow Mazowiecka to Oberhaching | 560.91 mi (902.70 km) |
| Ostrow Mazowiecka to Oberhausen | 642.32 mi (1,033.72 km) |
| Ostrow Mazowiecka to Oberhausen-Rheinhausen | 630.93 mi (1,015.38 km) |
