| North Port to Oerlinghausen | 4,802.80 mi (7,729.36 km) |
| North Port to Oestrich-Winkel | 4,817.69 mi (7,753.33 km) |
| North Port to Offenburg | 4,848.56 mi (7,803.00 km) |
| North Port to Oftersheim | 4,856.35 mi (7,815.54 km) |
| North Port to Ohrdruf | 4,912.63 mi (7,906.12 km) |
| North Port to Ohringen | 4,899.18 mi (7,884.47 km) |
| North Port to Olbernhau | 5,022.83 mi (8,083.46 km) |
| North Port to Olching | 5,000.90 mi (8,048.17 km) |
| North Port to Oldenburg | 4,759.93 mi (7,660.37 km) |
| North Port to Oldenburg in Holstein | 4,838.83 mi (7,787.35 km) |
| North Port to Olfen | 4,755.84 mi (7,653.79 km) |
| North Port to Olpe | 4,788.93 mi (7,707.05 km) |
| North Port to Olsberg | 4,808.59 mi (7,738.68 km) |
| North Port to Oranienburg | 4,966.19 mi (7,992.32 km) |
| North Port to Ortenberg | 4,854.10 mi (7,811.91 km) |
