| Tukums to Orbetello | 1,132.93 mi (1,823.28 km) |
| Tukums to Oria | 1,164.25 mi (1,873.68 km) |
| Tukums to Oristano | 1,348.20 mi (2,169.72 km) |
| Tukums to Orta Nova | 1,129.83 mi (1,818.29 km) |
| Tukums to Orte | 1,108.62 mi (1,784.15 km) |
| Tukums to Ortona | 1,081.03 mi (1,739.74 km) |
| Tukums to Orvieto | 1,097.35 mi (1,766.02 km) |
| Tukums to Orzinuovi | 979.38 mi (1,576.16 km) |
| Tukums to Osimo | 1,022.61 mi (1,645.73 km) |
| Tukums to Ospitaletto | 966.69 mi (1,555.74 km) |
| Tukums to Ostuni | 1,148.88 mi (1,848.95 km) |
| Tukums to Ottaviano | 1,178.93 mi (1,897.30 km) |
| Tukums to Ovada | 1,056.76 mi (1,700.69 km) |
| Tukums to Ozieri | 1,296.50 mi (2,086.52 km) |
| Tukums to Paceco | 1,398.12 mi (2,250.05 km) |
