| Carbonia to Oerlinghausen | 884.39 mi (1,423.28 km) |
| Carbonia to Oestrich-Winkel | 748.91 mi (1,205.25 km) |
| Carbonia to Offenburg | 643.20 mi (1,035.13 km) |
| Carbonia to Oftersheim | 704.99 mi (1,134.58 km) |
| Carbonia to Ohrdruf | 812.80 mi (1,308.07 km) |
| Carbonia to Ohringen | 694.87 mi (1,118.29 km) |
| Carbonia to Olbernhau | 828.22 mi (1,332.89 km) |
| Carbonia to Olching | 639.42 mi (1,029.04 km) |
| Carbonia to Oldenburg | 965.81 mi (1,554.32 km) |
| Carbonia to Oldenburg in Holstein | 1,051.38 mi (1,692.04 km) |
| Carbonia to Olfen | 868.81 mi (1,398.22 km) |
| Carbonia to Olpe | 819.40 mi (1,318.70 km) |
| Carbonia to Olsberg | 841.75 mi (1,354.67 km) |
| Carbonia to Oranienburg | 965.18 mi (1,553.30 km) |
| Carbonia to Ortenberg | 773.49 mi (1,244.82 km) |
