| Hermiston to Orbetello | 5,621.88 mi (9,047.54 km) |
| Hermiston to Oria | 5,905.80 mi (9,504.46 km) |
| Hermiston to Oristano | 5,694.25 mi (9,164.00 km) |
| Hermiston to Orta Nova | 5,806.84 mi (9,345.20 km) |
| Hermiston to Orte | 5,652.42 mi (9,096.69 km) |
| Hermiston to Ortona | 5,712.06 mi (9,192.67 km) |
| Hermiston to Orvieto | 5,629.88 mi (9,060.41 km) |
| Hermiston to Orzinuovi | 5,415.57 mi (8,715.52 km) |
| Hermiston to Osimo | 5,621.05 mi (9,046.20 km) |
| Hermiston to Ospitaletto | 5,410.35 mi (8,707.12 km) |
| Hermiston to Ostuni | 5,890.38 mi (9,479.66 km) |
| Hermiston to Ottaviano | 5,803.42 mi (9,339.70 km) |
| Hermiston to Ovada | 5,424.32 mi (8,729.60 km) |
| Hermiston to Ozieri | 5,667.19 mi (9,120.45 km) |
| Hermiston to Paceco | 5,920.59 mi (9,528.27 km) |
