| Bostonia to Orbetello | 6,287.53 mi (10,118.81 km) |
| Bostonia to Oria | 6,601.26 mi (10,623.69 km) |
| Bostonia to Oristano | 6,325.38 mi (10,179.72 km) |
| Bostonia to Orta Nova | 6,494.54 mi (10,451.94 km) |
| Bostonia to Orte | 6,325.67 mi (10,180.18 km) |
| Bostonia to Ortona | 6,397.37 mi (10,295.57 km) |
| Bostonia to Orvieto | 6,303.00 mi (10,143.70 km) |
| Bostonia to Orzinuovi | 6,092.63 mi (9,805.13 km) |
| Bostonia to Osimo | 6,307.44 mi (10,150.84 km) |
| Bostonia to Ospitaletto | 6,089.24 mi (9,799.68 km) |
| Bostonia to Ostuni | 6,586.80 mi (10,600.43 km) |
| Bostonia to Ottaviano | 6,480.26 mi (10,428.97 km) |
| Bostonia to Ovada | 6,088.63 mi (9,798.70 km) |
| Bostonia to Ozieri | 6,305.89 mi (10,148.35 km) |
| Bostonia to Paceco | 6,566.25 mi (10,567.36 km) |
