| Redan to Orbetello | 4,940.22 mi (7,950.51 km) |
| Redan to Oria | 5,293.84 mi (8,519.62 km) |
| Redan to Oristano | 4,905.31 mi (7,894.34 km) |
| Redan to Orta Nova | 5,178.38 mi (8,333.80 km) |
| Redan to Orte | 4,991.58 mi (8,033.17 km) |
| Redan to Ortona | 5,084.04 mi (8,181.97 km) |
| Redan to Orvieto | 4,970.56 mi (7,999.34 km) |
| Redan to Orzinuovi | 4,787.01 mi (7,703.95 km) |
| Redan to Osimo | 5,004.27 mi (8,053.59 km) |
| Redan to Ospitaletto | 4,788.06 mi (7,705.64 km) |
| Redan to Ostuni | 5,282.83 mi (8,501.89 km) |
| Redan to Ottaviano | 5,141.15 mi (8,273.88 km) |
| Redan to Ovada | 4,755.24 mi (7,652.83 km) |
| Redan to Ozieri | 4,901.97 mi (7,888.95 km) |
| Redan to Paceco | 5,155.88 mi (8,297.58 km) |
