| Ostrow Mazowiecka to Nazarje | 544.77 mi (876.73 km) |
| Ostrow Mazowiecka to Nova Gorica | 600.51 mi (966.42 km) |
| Ostrow Mazowiecka to Nova Vas | 588.21 mi (946.64 km) |
| Ostrow Mazowiecka to Novo Mesto | 570.36 mi (917.91 km) |
| Ostrow Mazowiecka to Odranci | 497.20 mi (800.17 km) |
| Ostrow Mazowiecka to Oplotnica | 528.63 mi (850.75 km) |
| Ostrow Mazowiecka to Ormoz | 510.86 mi (822.14 km) |
| Ostrow Mazowiecka to Osilnica | 597.88 mi (962.20 km) |
| Ostrow Mazowiecka to Pesnica | 509.85 mi (820.53 km) |
| Ostrow Mazowiecka to Piran | 626.92 mi (1,008.93 km) |
| Ostrow Mazowiecka to Pivka | 601.28 mi (967.67 km) |
| Ostrow Mazowiecka to Podcetrtek | 538.70 mi (866.95 km) |
| Ostrow Mazowiecka to Podlehnik | 521.37 mi (839.07 km) |
| Ostrow Mazowiecka to Podvelka | 519.70 mi (836.37 km) |
| Ostrow Mazowiecka to Poljcane | 529.75 mi (852.55 km) |
