| Hays to Oerlinghausen | 4,818.46 mi (7,754.56 km) |
| Hays to Oestrich-Winkel | 4,879.17 mi (7,852.27 km) |
| Hays to Offenburg | 4,942.33 mi (7,953.92 km) |
| Hays to Oftersheim | 4,926.63 mi (7,928.65 km) |
| Hays to Ohrdruf | 4,937.15 mi (7,945.57 km) |
| Hays to Ohringen | 4,966.15 mi (7,992.24 km) |
| Hays to Olbernhau | 5,030.97 mi (8,096.56 km) |
| Hays to Olching | 5,074.02 mi (8,165.84 km) |
| Hays to Oldenburg | 4,753.79 mi (7,650.49 km) |
| Hays to Oldenburg in Holstein | 4,790.73 mi (7,709.94 km) |
| Hays to Olfen | 4,785.52 mi (7,701.55 km) |
| Hays to Olpe | 4,830.30 mi (7,773.62 km) |
| Hays to Olsberg | 4,838.44 mi (7,786.72 km) |
| Hays to Oranienburg | 4,933.30 mi (7,939.37 km) |
| Hays to Ortenberg | 4,900.58 mi (7,886.71 km) |
