| Cartaxo to Orbetello | 1,067.65 mi (1,718.22 km) |
| Cartaxo to Oria | 1,399.63 mi (2,252.48 km) |
| Cartaxo to Oristano | 925.96 mi (1,490.19 km) |
| Cartaxo to Orta Nova | 1,296.29 mi (2,086.17 km) |
| Cartaxo to Orte | 1,127.38 mi (1,814.34 km) |
| Cartaxo to Ortona | 1,229.45 mi (1,978.61 km) |
| Cartaxo to Orvieto | 1,115.00 mi (1,794.43 km) |
| Cartaxo to Orzinuovi | 1,046.52 mi (1,684.21 km) |
| Cartaxo to Osimo | 1,189.68 mi (1,914.61 km) |
| Cartaxo to Ospitaletto | 1,056.28 mi (1,699.91 km) |
| Cartaxo to Ostuni | 1,395.75 mi (2,246.25 km) |
| Cartaxo to Ottaviano | 1,233.10 mi (1,984.49 km) |
| Cartaxo to Ovada | 970.86 mi (1,562.44 km) |
| Cartaxo to Ozieri | 946.81 mi (1,523.74 km) |
| Cartaxo to Paceco | 1,152.64 mi (1,855.00 km) |
