| Hereford to Oberkirch | 534.49 mi (860.18 km) |
| Hereford to Obernburg am Main | 537.68 mi (865.32 km) |
| Hereford to Obernkirchen | 501.22 mi (806.64 km) |
| Hereford to Oberschleissheim | 683.35 mi (1,099.74 km) |
| Hereford to Oberstdorf | 661.86 mi (1,065.17 km) |
| Hereford to Obertraubling | 686.46 mi (1,104.74 km) |
| Hereford to Obertshausen | 519.38 mi (835.86 km) |
| Hereford to Oberursel | 505.54 mi (813.58 km) |
| Hereford to Ochsenfurt | 580.94 mi (934.94 km) |
| Hereford to Ochsenhausen | 624.37 mi (1,004.82 km) |
| Hereford to Ochtrup | 419.96 mi (675.86 km) |
| Hereford to Odenthal | 428.03 mi (688.84 km) |
| Hereford to Oelde | 462.61 mi (744.51 km) |
| Hereford to Oelsnitz | 652.50 mi (1,050.10 km) |
| Hereford to Oer-Erkenschwick | 426.02 mi (685.61 km) |
