| Sussex to Oerlinghausen | 4,215.65 mi (6,784.43 km) |
| Sussex to Oestrich-Winkel | 4,268.34 mi (6,869.23 km) |
| Sussex to Offenburg | 4,326.48 mi (6,962.80 km) |
| Sussex to Oftersheim | 4,314.65 mi (6,943.76 km) |
| Sussex to Ohrdruf | 4,333.71 mi (6,974.43 km) |
| Sussex to Ohringen | 4,355.09 mi (7,008.84 km) |
| Sussex to Olbernhau | 4,431.63 mi (7,132.02 km) |
| Sussex to Olching | 4,462.77 mi (7,182.14 km) |
| Sussex to Oldenburg | 4,154.72 mi (6,686.38 km) |
| Sussex to Oldenburg in Holstein | 4,200.96 mi (6,760.79 km) |
| Sussex to Olfen | 4,179.70 mi (6,726.58 km) |
| Sussex to Olpe | 4,222.70 mi (6,795.78 km) |
| Sussex to Olsberg | 4,233.08 mi (6,812.48 km) |
| Sussex to Oranienburg | 4,341.63 mi (6,987.17 km) |
| Sussex to Ortenberg | 4,292.65 mi (6,908.36 km) |
