| Monreale to Oerlinghausen | 985.04 mi (1,585.27 km) |
| Monreale to Oestrich-Winkel | 863.79 mi (1,390.14 km) |
| Monreale to Offenburg | 765.95 mi (1,232.69 km) |
| Monreale to Oftersheim | 814.17 mi (1,310.27 km) |
| Monreale to Ohrdruf | 889.52 mi (1,431.55 km) |
| Monreale to Ohringen | 790.95 mi (1,272.90 km) |
| Monreale to Olbernhau | 869.54 mi (1,399.39 km) |
| Monreale to Olching | 706.08 mi (1,136.32 km) |
| Monreale to Oldenburg | 1,068.53 mi (1,719.63 km) |
| Monreale to Oldenburg in Holstein | 1,126.30 mi (1,812.60 km) |
| Monreale to Olfen | 984.61 mi (1,584.58 km) |
| Monreale to Olpe | 932.56 mi (1,500.81 km) |
| Monreale to Olsberg | 946.10 mi (1,522.60 km) |
| Monreale to Oranienburg | 1,013.79 mi (1,631.53 km) |
| Monreale to Ortenberg | 873.21 mi (1,405.29 km) |
