| Portsmouth to Oststeinbek | 512.30 mi (824.47 km) |
| Portsmouth to Ottendorf-Okrilla | 647.96 mi (1,042.79 km) |
| Portsmouth to Ottersberg | 463.35 mi (745.70 km) |
| Portsmouth to Ottobrunn | 602.57 mi (969.75 km) |
| Portsmouth to Ottweiler | 378.96 mi (609.87 km) |
| Portsmouth to Overath | 365.59 mi (588.36 km) |
| Portsmouth to Oyten | 457.34 mi (736.02 km) |
| Portsmouth to Paderborn | 429.80 mi (691.70 km) |
| Portsmouth to Papenburg | 393.53 mi (633.33 km) |
| Portsmouth to Parchim | 576.21 mi (927.31 km) |
| Portsmouth to Pasewalk | 664.68 mi (1,069.70 km) |
| Portsmouth to Passau | 667.26 mi (1,073.86 km) |
| Portsmouth to Pattensen | 476.78 mi (767.30 km) |
| Portsmouth to Pegnitz | 561.73 mi (904.01 km) |
| Portsmouth to Peine | 496.83 mi (799.57 km) |
