| Watervliet to Oerlinghausen | 3,698.23 mi (5,951.73 km) |
| Watervliet to Oestrich-Winkel | 3,730.72 mi (6,004.02 km) |
| Watervliet to Offenburg | 3,775.30 mi (6,075.76 km) |
| Watervliet to Oftersheim | 3,773.46 mi (6,072.80 km) |
| Watervliet to Ohrdruf | 3,812.81 mi (6,136.13 km) |
| Watervliet to Ohringen | 3,815.56 mi (6,140.55 km) |
| Watervliet to Olbernhau | 3,918.54 mi (6,306.28 km) |
| Watervliet to Olching | 3,921.20 mi (6,310.56 km) |
| Watervliet to Oldenburg | 3,647.11 mi (5,869.46 km) |
| Watervliet to Oldenburg in Holstein | 3,713.36 mi (5,976.08 km) |
| Watervliet to Olfen | 3,655.75 mi (5,883.37 km) |
| Watervliet to Olpe | 3,693.72 mi (5,944.47 km) |
| Watervliet to Olsberg | 3,709.31 mi (5,969.56 km) |
| Watervliet to Oranienburg | 3,847.17 mi (6,191.43 km) |
| Watervliet to Ortenberg | 3,761.76 mi (6,053.97 km) |
