| Ostrow Mazowiecka to Pantelimon | 609.15 mi (980.34 km) |
| Ostrow Mazowiecka to Pascani | 439.08 mi (706.63 km) |
| Ostrow Mazowiecka to Pechea | 561.78 mi (904.10 km) |
| Ostrow Mazowiecka to Pecica | 459.59 mi (739.64 km) |
| Ostrow Mazowiecka to Petrila | 512.43 mi (824.68 km) |
| Ostrow Mazowiecka to Petrosani | 514.75 mi (828.41 km) |
| Ostrow Mazowiecka to Piatra Neamt | 451.76 mi (727.04 km) |
| Ostrow Mazowiecka to Pitesti | 564.79 mi (908.95 km) |
| Ostrow Mazowiecka to Ploiesti | 574.17 mi (924.03 km) |
| Ostrow Mazowiecka to Podu Iloaiei | 453.15 mi (729.28 km) |
| Ostrow Mazowiecka to Poiana Mare | 615.01 mi (989.76 km) |
| Ostrow Mazowiecka to Poienile de sub Munte | 361.94 mi (582.49 km) |
| Ostrow Mazowiecka to Popesti-Leordeni | 613.34 mi (987.08 km) |
| Ostrow Mazowiecka to Pucioasa | 557.20 mi (896.73 km) |
| Ostrow Mazowiecka to Radauti | 385.55 mi (620.49 km) |
