| Tumba to Orbetello | 1,191.99 mi (1,918.31 km) |
| Tumba to Oria | 1,292.07 mi (2,079.38 km) |
| Tumba to Oristano | 1,392.69 mi (2,241.31 km) |
| Tumba to Orta Nova | 1,237.99 mi (1,992.35 km) |
| Tumba to Orte | 1,179.68 mi (1,898.51 km) |
| Tumba to Ortona | 1,173.37 mi (1,888.36 km) |
| Tumba to Orvieto | 1,164.51 mi (1,874.09 km) |
| Tumba to Orzinuovi | 1,008.33 mi (1,622.76 km) |
| Tumba to Osimo | 1,101.33 mi (1,772.43 km) |
| Tumba to Ospitaletto | 996.14 mi (1,603.14 km) |
| Tumba to Ostuni | 1,275.97 mi (2,053.47 km) |
| Tumba to Ottaviano | 1,276.11 mi (2,053.69 km) |
| Tumba to Ovada | 1,076.94 mi (1,733.17 km) |
| Tumba to Ozieri | 1,341.96 mi (2,159.67 km) |
| Tumba to Paceco | 1,484.46 mi (2,389.01 km) |
