| San Sebastian de la Gomera to Orbetello | 1,866.66 mi (3,004.10 km) |
| San Sebastian de la Gomera to Oria | 2,142.84 mi (3,448.56 km) |
| San Sebastian de la Gomera to Oristano | 1,674.50 mi (2,694.85 km) |
| San Sebastian de la Gomera to Orta Nova | 2,059.70 mi (3,314.77 km) |
| San Sebastian de la Gomera to Orte | 1,922.61 mi (3,094.15 km) |
| San Sebastian de la Gomera to Ortona | 2,016.38 mi (3,245.06 km) |
| San Sebastian de la Gomera to Orvieto | 1,916.24 mi (3,083.88 km) |
| San Sebastian de la Gomera to Orzinuovi | 1,900.21 mi (3,058.10 km) |
| San Sebastian de la Gomera to Osimo | 2,000.30 mi (3,219.17 km) |
| San Sebastian de la Gomera to Ospitaletto | 1,911.43 mi (3,076.14 km) |
| San Sebastian de la Gomera to Ostuni | 2,143.87 mi (3,450.22 km) |
| San Sebastian de la Gomera to Ottaviano | 1,988.76 mi (3,200.59 km) |
| San Sebastian de la Gomera to Ovada | 1,819.51 mi (2,928.22 km) |
| San Sebastian de la Gomera to Ozieri | 1,712.01 mi (2,755.22 km) |
| San Sebastian de la Gomera to Paceco | 1,838.97 mi (2,959.53 km) |
