| Roseburg to Orbetello | 5,882.38 mi (9,466.77 km) |
| Roseburg to Oria | 6,162.02 mi (9,916.82 km) |
| Roseburg to Oristano | 5,958.03 mi (9,588.52 km) |
| Roseburg to Orta Nova | 6,064.31 mi (9,759.57 km) |
| Roseburg to Orte | 5,911.99 mi (9,514.42 km) |
| Roseburg to Ortona | 5,970.01 mi (9,607.81 km) |
| Roseburg to Orvieto | 5,889.49 mi (9,478.22 km) |
| Roseburg to Orzinuovi | 5,675.06 mi (9,133.13 km) |
| Roseburg to Osimo | 5,879.01 mi (9,461.36 km) |
| Roseburg to Ospitaletto | 5,669.62 mi (9,124.38 km) |
| Roseburg to Ostuni | 6,146.50 mi (9,891.83 km) |
| Roseburg to Ottaviano | 6,062.31 mi (9,756.34 km) |
| Roseburg to Ovada | 5,685.27 mi (9,149.55 km) |
| Roseburg to Ozieri | 5,930.34 mi (9,543.97 km) |
| Roseburg to Paceco | 6,182.75 mi (9,950.18 km) |
