| Notodden to Orbetello | 1,190.82 mi (1,916.44 km) |
| Notodden to Oria | 1,371.15 mi (2,206.64 km) |
| Notodden to Oristano | 1,363.02 mi (2,193.57 km) |
| Notodden to Orta Nova | 1,294.91 mi (2,083.96 km) |
| Notodden to Orte | 1,194.02 mi (1,921.59 km) |
| Notodden to Ortona | 1,214.29 mi (1,954.20 km) |
| Notodden to Orvieto | 1,174.98 mi (1,890.95 km) |
| Notodden to Orzinuovi | 983.64 mi (1,583.01 km) |
| Notodden to Osimo | 1,130.14 mi (1,818.78 km) |
| Notodden to Ospitaletto | 973.11 mi (1,566.07 km) |
| Notodden to Ostuni | 1,354.84 mi (2,180.41 km) |
| Notodden to Ottaviano | 1,317.39 mi (2,120.13 km) |
| Notodden to Ovada | 1,035.97 mi (1,667.24 km) |
| Notodden to Ozieri | 1,315.87 mi (2,117.69 km) |
| Notodden to Paceco | 1,502.93 mi (2,418.73 km) |
