| West Islip to Oberkirch | 3,846.54 mi (6,190.40 km) |
| West Islip to Obernburg am Main | 3,852.19 mi (6,199.50 km) |
| West Islip to Obernkirchen | 3,783.47 mi (6,088.91 km) |
| West Islip to Oberschleissheim | 3,998.86 mi (6,435.55 km) |
| West Islip to Oberstdorf | 3,971.75 mi (6,391.92 km) |
| West Islip to Obertraubling | 4,000.94 mi (6,438.89 km) |
| West Islip to Obertshausen | 3,833.24 mi (6,169.00 km) |
| West Islip to Oberursel | 3,819.01 mi (6,146.10 km) |
| West Islip to Ochsenfurt | 3,895.18 mi (6,268.69 km) |
| West Islip to Ochsenhausen | 3,937.61 mi (6,336.97 km) |
| West Islip to Ochtrup | 3,709.72 mi (5,970.22 km) |
| West Islip to Odenthal | 3,737.51 mi (6,014.94 km) |
| West Islip to Oelde | 3,757.24 mi (6,046.70 km) |
| West Islip to Oelsnitz | 3,956.26 mi (6,366.99 km) |
| West Islip to Oer-Erkenschwick | 3,726.77 mi (5,997.65 km) |
