| Reda to Orbetello | 901.41 mi (1,450.68 km) |
| Reda to Oria | 975.93 mi (1,570.60 km) |
| Reda to Oristano | 1,112.21 mi (1,789.93 km) |
| Reda to Orta Nova | 925.87 mi (1,490.05 km) |
| Reda to Orte | 882.34 mi (1,419.99 km) |
| Reda to Ortona | 866.28 mi (1,394.15 km) |
| Reda to Orvieto | 869.16 mi (1,398.78 km) |
| Reda to Orzinuovi | 737.21 mi (1,186.42 km) |
| Reda to Osimo | 799.70 mi (1,287.00 km) |
| Reda to Ospitaletto | 724.56 mi (1,166.07 km) |
| Reda to Ostuni | 959.90 mi (1,544.81 km) |
| Reda to Ottaviano | 967.68 mi (1,557.34 km) |
| Reda to Ovada | 813.10 mi (1,308.55 km) |
| Reda to Ozieri | 1,060.64 mi (1,706.93 km) |
| Reda to Paceco | 1,181.14 mi (1,900.86 km) |
