| Ostrow Mazowiecka to Cesky Tesin | 254.01 mi (408.78 km) |
| Ostrow Mazowiecka to Cheb | 450.95 mi (725.74 km) |
| Ostrow Mazowiecka to Chocen | 311.71 mi (501.65 km) |
| Ostrow Mazowiecka to Chodov | 431.11 mi (693.80 km) |
| Ostrow Mazowiecka to Chomutov | 397.79 mi (640.18 km) |
| Ostrow Mazowiecka to Chotebor | 343.04 mi (552.06 km) |
| Ostrow Mazowiecka to Chrudim | 328.54 mi (528.74 km) |
| Ostrow Mazowiecka to Decin | 357.57 mi (575.45 km) |
| Ostrow Mazowiecka to Dobris | 393.57 mi (633.39 km) |
| Ostrow Mazowiecka to Domazlice | 452.63 mi (728.44 km) |
| Ostrow Mazowiecka to Duchcov | 380.41 mi (612.21 km) |
| Ostrow Mazowiecka to Dvur Kralove nad Labem | 308.00 mi (495.67 km) |
| Ostrow Mazowiecka to Frenstat pod Radhostem | 275.63 mi (443.58 km) |
| Ostrow Mazowiecka to Frydek-Mistek | 264.27 mi (425.30 km) |
| Ostrow Mazowiecka to Frydlant nad Ostravici | 269.37 mi (433.52 km) |
