| Gardhabaer to Oerlinghausen | 1,377.57 mi (2,216.99 km) |
| Gardhabaer to Oestrich-Winkel | 1,464.99 mi (2,357.68 km) |
| Gardhabaer to Offenburg | 1,548.92 mi (2,492.75 km) |
| Gardhabaer to Oftersheim | 1,515.47 mi (2,438.91 km) |
| Gardhabaer to Ohrdruf | 1,495.18 mi (2,406.27 km) |
| Gardhabaer to Ohringen | 1,549.55 mi (2,493.76 km) |
| Gardhabaer to Olbernhau | 1,577.18 mi (2,538.23 km) |
| Gardhabaer to Olching | 1,654.37 mi (2,662.45 km) |
| Gardhabaer to Oldenburg | 1,304.27 mi (2,099.02 km) |
| Gardhabaer to Oldenburg in Holstein | 1,323.97 mi (2,130.73 km) |
| Gardhabaer to Olfen | 1,355.34 mi (2,181.22 km) |
| Gardhabaer to Olpe | 1,405.09 mi (2,261.27 km) |
| Gardhabaer to Olsberg | 1,405.03 mi (2,261.17 km) |
| Gardhabaer to Oranienburg | 1,467.80 mi (2,362.19 km) |
| Gardhabaer to Ortenberg | 1,474.13 mi (2,372.38 km) |
