| Saint Helens to Oberkirch | 579.84 mi (933.16 km) |
| Saint Helens to Obernburg am Main | 566.64 mi (911.91 km) |
| Saint Helens to Obernkirchen | 501.20 mi (806.60 km) |
| Saint Helens to Oberschleissheim | 718.62 mi (1,156.51 km) |
| Saint Helens to Oberstdorf | 707.50 mi (1,138.61 km) |
| Saint Helens to Obertraubling | 714.35 mi (1,149.63 km) |
| Saint Helens to Obertshausen | 546.92 mi (880.18 km) |
| Saint Helens to Oberursel | 532.39 mi (856.80 km) |
| Saint Helens to Ochsenfurt | 608.89 mi (979.91 km) |
| Saint Helens to Ochsenhausen | 666.38 mi (1,072.43 km) |
| Saint Helens to Ochtrup | 423.42 mi (681.43 km) |
| Saint Helens to Odenthal | 449.13 mi (722.80 km) |
| Saint Helens to Oelde | 469.93 mi (756.28 km) |
| Saint Helens to Oelsnitz | 667.67 mi (1,074.51 km) |
| Saint Helens to Oer-Erkenschwick | 437.95 mi (704.82 km) |
