| Potters Bar to Oststeinbek | 451.99 mi (727.41 km) |
| Potters Bar to Ottendorf-Okrilla | 603.50 mi (971.24 km) |
| Potters Bar to Ottersberg | 404.89 mi (651.60 km) |
| Potters Bar to Ottobrunn | 583.27 mi (938.68 km) |
| Potters Bar to Ottweiler | 360.52 mi (580.20 km) |
| Potters Bar to Overath | 327.05 mi (526.34 km) |
| Potters Bar to Oyten | 399.01 mi (642.15 km) |
| Potters Bar to Paderborn | 382.41 mi (615.43 km) |
| Potters Bar to Papenburg | 333.31 mi (536.41 km) |
| Potters Bar to Parchim | 517.86 mi (833.42 km) |
| Potters Bar to Pasewalk | 607.01 mi (976.88 km) |
| Potters Bar to Passau | 640.62 mi (1,030.97 km) |
| Potters Bar to Pattensen | 424.89 mi (683.79 km) |
| Potters Bar to Pegnitz | 529.55 mi (852.23 km) |
| Potters Bar to Peine | 444.70 mi (715.68 km) |
