| Hillcrest Heights to Olympia Heights (Florida) | 927.04 mi (1,491.92 km) |
| Hillcrest Heights to Omaha (Nebraska) | 1,021.26 mi (1,643.57 km) |
| Hillcrest Heights to On Top of the World Designated Place (Florida) | 737.94 mi (1,187.60 km) |
| Hillcrest Heights to Onalaska (Wisconsin) | 815.45 mi (1,312.34 km) |
| Hillcrest Heights to Oneida (New York) | 300.69 mi (483.91 km) |
| Hillcrest Heights to Oneonta (New York) | 269.01 mi (432.93 km) |
| Hillcrest Heights to Ontario (California) | 2,264.52 mi (3,644.40 km) |
| Hillcrest Heights to Ontario (Oregon) | 2,082.51 mi (3,351.48 km) |
| Hillcrest Heights to Opa-locka (Florida) | 914.11 mi (1,471.12 km) |
| Hillcrest Heights to Opelika (Alabama) | 635.57 mi (1,022.86 km) |
| Hillcrest Heights to Opelousas (Louisiana) | 1,031.05 mi (1,659.31 km) |
| Hillcrest Heights to Orange (California) | 2,281.81 mi (3,672.22 km) |
| Hillcrest Heights to Orange (Texas) | 1,127.55 mi (1,814.61 km) |
| Hillcrest Heights to Orange City (Florida) | 727.51 mi (1,170.81 km) |
| Hillcrest Heights to Orangeburg (South Carolina) | 428.56 mi (689.70 km) |
