| Lewiston to Orbetello | 3,917.82 mi (6,305.11 km) |
| Lewiston to Oria | 4,268.66 mi (6,869.74 km) |
| Lewiston to Oristano | 3,895.05 mi (6,268.48 km) |
| Lewiston to Orta Nova | 4,153.52 mi (6,684.44 km) |
| Lewiston to Orte | 3,967.75 mi (6,385.47 km) |
| Lewiston to Ortona | 4,058.26 mi (6,531.14 km) |
| Lewiston to Orvieto | 3,946.38 mi (6,351.08 km) |
| Lewiston to Orzinuovi | 3,758.67 mi (6,048.99 km) |
| Lewiston to Osimo | 3,976.90 mi (6,400.20 km) |
| Lewiston to Ospitaletto | 3,759.28 mi (6,049.98 km) |
| Lewiston to Ostuni | 4,257.18 mi (6,851.27 km) |
| Lewiston to Ottaviano | 4,118.98 mi (6,628.86 km) |
| Lewiston to Ovada | 3,729.80 mi (6,002.53 km) |
| Lewiston to Ozieri | 3,888.50 mi (6,257.94 km) |
| Lewiston to Paceco | 4,145.71 mi (6,671.88 km) |
