| North Charleston to Oerlinghausen | 4,417.90 mi (7,109.93 km) |
| North Charleston to Oestrich-Winkel | 4,439.77 mi (7,145.12 km) |
| North Charleston to Offenburg | 4,476.05 mi (7,203.51 km) |
| North Charleston to Oftersheim | 4,480.11 mi (7,210.05 km) |
| North Charleston to Ohrdruf | 4,529.83 mi (7,290.05 km) |
| North Charleston to Ohringen | 4,522.75 mi (7,278.66 km) |
| North Charleston to Olbernhau | 4,638.43 mi (7,464.83 km) |
| North Charleston to Olching | 4,626.23 mi (7,445.20 km) |
| North Charleston to Oldenburg | 4,371.66 mi (7,035.51 km) |
| North Charleston to Oldenburg in Holstein | 4,445.54 mi (7,154.40 km) |
| North Charleston to Olfen | 4,372.64 mi (7,037.08 km) |
| North Charleston to Olpe | 4,407.72 mi (7,093.53 km) |
| North Charleston to Olsberg | 4,425.80 mi (7,122.64 km) |
| North Charleston to Oranienburg | 4,575.73 mi (7,363.92 km) |
| North Charleston to Ortenberg | 4,474.14 mi (7,200.44 km) |
