| Great Bend to Oerlinghausen | 4,829.08 mi (7,771.65 km) |
| Great Bend to Oestrich-Winkel | 4,888.29 mi (7,866.94 km) |
| Great Bend to Offenburg | 4,950.42 mi (7,966.94 km) |
| Great Bend to Oftersheim | 4,935.53 mi (7,942.96 km) |
| Great Bend to Ohrdruf | 4,947.69 mi (7,962.54 km) |
| Great Bend to Ohringen | 4,975.24 mi (8,006.88 km) |
| Great Bend to Olbernhau | 5,042.27 mi (8,114.75 km) |
| Great Bend to Olching | 5,083.10 mi (8,180.47 km) |
| Great Bend to Oldenburg | 4,765.05 mi (7,668.61 km) |
| Great Bend to Oldenburg in Holstein | 4,803.54 mi (7,730.55 km) |
| Great Bend to Olfen | 4,795.57 mi (7,717.73 km) |
| Great Bend to Olpe | 4,840.04 mi (7,789.29 km) |
| Great Bend to Olsberg | 4,848.60 mi (7,803.07 km) |
| Great Bend to Oranienburg | 4,945.85 mi (7,959.58 km) |
| Great Bend to Ortenberg | 4,910.27 mi (7,902.31 km) |
