| Nannestad to Orbetello | 1,230.34 mi (1,980.04 km) |
| Nannestad to Oria | 1,394.00 mi (2,243.43 km) |
| Nannestad to Oristano | 1,409.02 mi (2,267.60 km) |
| Nannestad to Orta Nova | 1,322.48 mi (2,128.33 km) |
| Nannestad to Orte | 1,230.33 mi (1,980.02 km) |
| Nannestad to Ortona | 1,244.99 mi (2,003.61 km) |
| Nannestad to Orvieto | 1,212.00 mi (1,950.52 km) |
| Nannestad to Orzinuovi | 1,026.58 mi (1,652.13 km) |
| Nannestad to Osimo | 1,162.97 mi (1,871.62 km) |
| Nannestad to Ospitaletto | 1,015.64 mi (1,634.52 km) |
| Nannestad to Ostuni | 1,377.67 mi (2,217.15 km) |
| Nannestad to Ottaviano | 1,348.55 mi (2,170.27 km) |
| Nannestad to Ovada | 1,082.50 mi (1,742.11 km) |
| Nannestad to Ozieri | 1,360.99 mi (2,190.30 km) |
| Nannestad to Paceco | 1,539.76 mi (2,478.01 km) |
