| Drammen to Orbetello | 1,195.97 mi (1,924.73 km) |
| Drammen to Oria | 1,367.32 mi (2,200.49 km) |
| Drammen to Oristano | 1,372.05 mi (2,208.09 km) |
| Drammen to Orta Nova | 1,293.51 mi (2,081.71 km) |
| Drammen to Orte | 1,197.34 mi (1,926.94 km) |
| Drammen to Ortona | 1,214.53 mi (1,954.60 km) |
| Drammen to Orvieto | 1,178.70 mi (1,896.93 km) |
| Drammen to Orzinuovi | 990.71 mi (1,594.39 km) |
| Drammen to Osimo | 1,131.51 mi (1,820.99 km) |
| Drammen to Ospitaletto | 979.93 mi (1,577.05 km) |
| Drammen to Ostuni | 1,351.00 mi (2,174.22 km) |
| Drammen to Ottaviano | 1,317.91 mi (2,120.98 km) |
| Drammen to Ovada | 1,045.23 mi (1,682.13 km) |
| Drammen to Ozieri | 1,324.35 mi (2,131.34 km) |
| Drammen to Paceco | 1,506.64 mi (2,424.70 km) |
