| Ames to Orbetello | 1,006.38 mi (1,619.61 km) |
| Ames to Oria | 1,359.54 mi (2,187.97 km) |
| Ames to Oristano | 914.58 mi (1,471.87 km) |
| Ames to Orta Nova | 1,248.07 mi (2,008.57 km) |
| Ames to Orte | 1,065.31 mi (1,714.45 km) |
| Ames to Ortona | 1,167.95 mi (1,879.63 km) |
| Ames to Orvieto | 1,048.86 mi (1,687.98 km) |
| Ames to Orzinuovi | 934.32 mi (1,503.64 km) |
| Ames to Osimo | 1,111.55 mi (1,788.86 km) |
| Ames to Ospitaletto | 941.88 mi (1,515.81 km) |
| Ames to Ostuni | 1,352.74 mi (2,177.03 km) |
| Ames to Ottaviano | 1,193.58 mi (1,920.88 km) |
| Ames to Ovada | 868.81 mi (1,398.22 km) |
| Ames to Ozieri | 921.41 mi (1,482.87 km) |
| Ames to Paceco | 1,160.95 mi (1,868.37 km) |
