| Hatfield to Oberkirch | 429.91 mi (691.88 km) |
| Hatfield to Obernburg am Main | 429.73 mi (691.58 km) |
| Hatfield to Obernkirchen | 398.56 mi (641.42 km) |
| Hatfield to Oberschleissheim | 576.31 mi (927.48 km) |
| Hatfield to Oberstdorf | 557.68 mi (897.50 km) |
| Hatfield to Obertraubling | 578.53 mi (931.05 km) |
| Hatfield to Obertshausen | 411.36 mi (662.02 km) |
| Hatfield to Oberursel | 397.50 mi (639.71 km) |
| Hatfield to Ochsenfurt | 472.97 mi (761.17 km) |
| Hatfield to Ochsenhausen | 518.87 mi (835.04 km) |
| Hatfield to Ochtrup | 316.91 mi (510.02 km) |
| Hatfield to Odenthal | 320.37 mi (515.59 km) |
| Hatfield to Oelde | 357.73 mi (575.71 km) |
| Hatfield to Oelsnitz | 545.10 mi (877.25 km) |
| Hatfield to Oer-Erkenschwick | 320.12 mi (515.18 km) |
