| Hillcrest Heights to Orbetello | 4,408.30 mi (7,094.48 km) |
| Hillcrest Heights to Oria | 4,761.36 mi (7,662.67 km) |
| Hillcrest Heights to Oristano | 4,376.75 mi (7,043.69 km) |
| Hillcrest Heights to Orta Nova | 4,645.95 mi (7,476.94 km) |
| Hillcrest Heights to Orte | 4,459.34 mi (7,176.62 km) |
| Hillcrest Heights to Ortona | 4,551.41 mi (7,324.79 km) |
| Hillcrest Heights to Orvieto | 4,438.24 mi (7,142.66 km) |
| Hillcrest Heights to Orzinuovi | 4,253.91 mi (6,846.01 km) |
| Hillcrest Heights to Osimo | 4,471.34 mi (7,195.92 km) |
| Hillcrest Heights to Ospitaletto | 4,254.90 mi (6,847.60 km) |
| Hillcrest Heights to Ostuni | 4,750.25 mi (7,644.79 km) |
| Hillcrest Heights to Ottaviano | 4,609.33 mi (7,418.00 km) |
| Hillcrest Heights to Ovada | 4,222.64 mi (6,795.68 km) |
| Hillcrest Heights to Ozieri | 4,372.44 mi (7,036.76 km) |
| Hillcrest Heights to Paceco | 4,627.45 mi (7,447.16 km) |
