| Mount Dora to Orbetello | 5,040.70 mi (8,112.22 km) |
| Mount Dora to Oria | 5,398.16 mi (8,687.50 km) |
| Mount Dora to Oristano | 4,985.00 mi (8,022.58 km) |
| Mount Dora to Orta Nova | 5,282.67 mi (8,501.64 km) |
| Mount Dora to Orte | 5,094.73 mi (8,199.18 km) |
| Mount Dora to Ortona | 5,191.05 mi (8,354.18 km) |
| Mount Dora to Orvieto | 5,074.61 mi (8,166.79 km) |
| Mount Dora to Orzinuovi | 4,902.37 mi (7,889.61 km) |
| Mount Dora to Osimo | 5,115.71 mi (8,232.94 km) |
| Mount Dora to Ospitaletto | 4,904.62 mi (7,893.22 km) |
| Mount Dora to Ostuni | 5,388.31 mi (8,671.64 km) |
| Mount Dora to Ottaviano | 5,239.82 mi (8,432.68 km) |
| Mount Dora to Ovada | 4,863.56 mi (7,827.14 km) |
| Mount Dora to Ozieri | 4,986.64 mi (8,025.22 km) |
| Mount Dora to Paceco | 5,233.51 mi (8,422.52 km) |
