| Hayden to Oerlinghausen | 4,832.84 mi (7,777.71 km) |
| Hayden to Oestrich-Winkel | 4,926.38 mi (7,928.24 km) |
| Hayden to Offenburg | 5,010.87 mi (8,064.22 km) |
| Hayden to Oftersheim | 4,976.97 mi (8,009.66 km) |
| Hayden to Ohrdruf | 4,948.31 mi (7,963.54 km) |
| Hayden to Ohringen | 5,010.23 mi (8,063.19 km) |
| Hayden to Olbernhau | 5,020.16 mi (8,079.16 km) |
| Hayden to Olching | 5,113.83 mi (8,229.91 km) |
| Hayden to Oldenburg | 4,755.81 mi (7,653.73 km) |
| Hayden to Oldenburg in Holstein | 4,754.12 mi (7,651.01 km) |
| Hayden to Olfen | 4,814.61 mi (7,748.37 km) |
| Hayden to Olpe | 4,865.11 mi (7,829.65 km) |
| Hayden to Olsberg | 4,862.89 mi (7,826.07 km) |
| Hayden to Oranienburg | 4,896.65 mi (7,880.40 km) |
| Hayden to Ortenberg | 4,933.36 mi (7,939.47 km) |
