| Roswell to Orbetello | 4,935.43 mi (7,942.81 km) |
| Roswell to Oria | 5,288.71 mi (8,511.35 km) |
| Roswell to Oristano | 4,901.87 mi (7,888.80 km) |
| Roswell to Orta Nova | 5,173.28 mi (8,325.59 km) |
| Roswell to Orte | 4,986.60 mi (8,025.16 km) |
| Roswell to Ortona | 5,078.79 mi (8,173.53 km) |
| Roswell to Orvieto | 4,965.53 mi (7,991.25 km) |
| Roswell to Orzinuovi | 4,781.32 mi (7,694.79 km) |
| Roswell to Osimo | 4,998.76 mi (8,044.73 km) |
| Roswell to Ospitaletto | 4,782.29 mi (7,696.35 km) |
| Roswell to Ostuni | 5,277.62 mi (8,493.51 km) |
| Roswell to Ottaviano | 5,136.42 mi (8,266.27 km) |
| Roswell to Ovada | 4,750.01 mi (7,644.41 km) |
| Roswell to Ozieri | 4,898.20 mi (7,882.90 km) |
| Roswell to Paceco | 5,152.49 mi (8,292.13 km) |
