| Ladson to Orbetello | 4,788.65 mi (7,706.59 km) |
| Ladson to Oria | 5,144.68 mi (8,279.57 km) |
| Ladson to Oristano | 4,743.15 mi (7,633.36 km) |
| Ladson to Orta Nova | 5,029.08 mi (8,093.53 km) |
| Ladson to Orte | 4,841.47 mi (7,791.60 km) |
| Ladson to Ortona | 4,936.09 mi (7,943.86 km) |
| Ladson to Orvieto | 4,820.90 mi (7,758.49 km) |
| Ladson to Orzinuovi | 4,643.26 mi (7,472.60 km) |
| Ladson to Osimo | 4,858.62 mi (7,819.19 km) |
| Ladson to Ospitaletto | 4,644.97 mi (7,475.35 km) |
| Ladson to Ostuni | 5,134.27 mi (8,262.81 km) |
| Ladson to Ottaviano | 4,988.86 mi (8,028.80 km) |
| Ladson to Ovada | 4,607.63 mi (7,415.26 km) |
| Ladson to Ozieri | 4,742.27 mi (7,631.94 km) |
| Ladson to Paceco | 4,993.00 mi (8,035.45 km) |
