| Rio de Mouro to Oerlinghausen | 1,256.15 mi (2,021.59 km) |
| Rio de Mouro to Oestrich-Winkel | 1,150.14 mi (1,850.97 km) |
| Rio de Mouro to Offenburg | 1,088.82 mi (1,752.29 km) |
| Rio de Mouro to Oftersheim | 1,147.16 mi (1,846.18 km) |
| Rio de Mouro to Ohrdruf | 1,281.77 mi (2,062.81 km) |
| Rio de Mouro to Ohringen | 1,176.01 mi (1,892.60 km) |
| Rio de Mouro to Olbernhau | 1,374.24 mi (2,211.63 km) |
| Rio de Mouro to Olching | 1,217.27 mi (1,959.01 km) |
| Rio de Mouro to Oldenburg | 1,295.47 mi (2,084.86 km) |
| Rio de Mouro to Oldenburg in Holstein | 1,430.08 mi (2,301.50 km) |
| Rio de Mouro to Olfen | 1,203.26 mi (1,936.46 km) |
| Rio de Mouro to Olpe | 1,186.91 mi (1,910.15 km) |
| Rio de Mouro to Olsberg | 1,223.28 mi (1,968.68 km) |
| Rio de Mouro to Oranienburg | 1,443.91 mi (2,323.75 km) |
| Rio de Mouro to Ortenberg | 1,202.46 mi (1,935.17 km) |
