| Willenhall to Oberkirch | 525.05 mi (844.99 km) |
| Willenhall to Obernburg am Main | 519.83 mi (836.59 km) |
| Willenhall to Obernkirchen | 471.02 mi (758.03 km) |
| Willenhall to Oberschleissheim | 668.98 mi (1,076.62 km) |
| Willenhall to Oberstdorf | 652.89 mi (1,050.72 km) |
| Willenhall to Obertraubling | 668.52 mi (1,075.87 km) |
| Willenhall to Obertshausen | 500.79 mi (805.95 km) |
| Willenhall to Oberursel | 486.57 mi (783.06 km) |
| Willenhall to Ochsenfurt | 562.76 mi (905.67 km) |
| Willenhall to Ochsenhausen | 613.35 mi (987.09 km) |
| Willenhall to Ochtrup | 390.64 mi (628.67 km) |
| Willenhall to Odenthal | 406.05 mi (653.47 km) |
| Willenhall to Oelde | 435.02 mi (700.10 km) |
| Willenhall to Oelsnitz | 628.80 mi (1,011.96 km) |
| Willenhall to Oer-Erkenschwick | 400.08 mi (643.87 km) |
