| Tromsdalen to Orbetello | 1,900.06 mi (3,057.86 km) |
| Tromsdalen to Oria | 2,014.28 mi (3,241.67 km) |
| Tromsdalen to Oristano | 2,089.49 mi (3,362.71 km) |
| Tromsdalen to Orta Nova | 1,959.85 mi (3,154.08 km) |
| Tromsdalen to Orte | 1,892.97 mi (3,046.44 km) |
| Tromsdalen to Ortona | 1,892.98 mi (3,046.46 km) |
| Tromsdalen to Orvieto | 1,876.46 mi (3,019.88 km) |
| Tromsdalen to Orzinuovi | 1,704.29 mi (2,742.79 km) |
| Tromsdalen to Osimo | 1,818.01 mi (2,925.80 km) |
| Tromsdalen to Ospitaletto | 1,692.76 mi (2,724.24 km) |
| Tromsdalen to Ostuni | 1,998.21 mi (3,215.81 km) |
| Tromsdalen to Ottaviano | 1,996.21 mi (3,212.58 km) |
| Tromsdalen to Ovada | 1,765.04 mi (2,840.56 km) |
| Tromsdalen to Ozieri | 2,040.25 mi (3,283.46 km) |
| Tromsdalen to Paceco | 2,200.61 mi (3,541.53 km) |
