| Ostrow Wielkopolski to Oststeinbek | 346.50 mi (557.64 km) |
| Ostrow Wielkopolski to Ottendorf-Okrilla | 174.97 mi (281.59 km) |
| Ostrow Wielkopolski to Ottersberg | 378.78 mi (609.59 km) |
| Ostrow Wielkopolski to Ottobrunn | 368.98 mi (593.81 km) |
| Ostrow Wielkopolski to Ottweiler | 493.29 mi (793.87 km) |
| Ostrow Wielkopolski to Overath | 456.47 mi (734.62 km) |
| Ostrow Wielkopolski to Oyten | 383.62 mi (617.38 km) |
| Ostrow Wielkopolski to Paderborn | 387.99 mi (624.40 km) |
| Ostrow Wielkopolski to Papenburg | 449.88 mi (724.01 km) |
| Ostrow Wielkopolski to Parchim | 279.43 mi (449.70 km) |
| Ostrow Wielkopolski to Pasewalk | 204.96 mi (329.86 km) |
| Ostrow Wielkopolski to Passau | 286.81 mi (461.58 km) |
| Ostrow Wielkopolski to Pattensen | 345.20 mi (555.55 km) |
| Ostrow Wielkopolski to Pegnitz | 303.87 mi (489.04 km) |
| Ostrow Wielkopolski to Peine | 325.82 mi (524.36 km) |
