| Hilo to Oakley (California) | 2,364.13 mi (3,804.70 km) |
| Hilo to Oakton (Virginia) | 4,732.58 mi (7,616.35 km) |
| Hilo to Oakville (Missouri) | 4,035.71 mi (6,494.85 km) |
| Hilo to Oatfield (Oregon) | 2,564.37 mi (4,126.96 km) |
| Hilo to Ocala (Florida) | 4,565.57 mi (7,347.58 km) |
| Hilo to Ocean Acres (New Jersey) | 4,882.55 mi (7,857.70 km) |
| Hilo to Ocean City (New Jersey) | 4,871.32 mi (7,839.64 km) |
| Hilo to Ocean Pines (Maryland) | 4,852.84 mi (7,809.88 km) |
| Hilo to Ocean Pointe (Hawaii) | 221.10 mi (355.83 km) |
| Hilo to Ocean Springs (Mississippi) | 4,159.69 mi (6,694.38 km) |
| Hilo to Oceanside (California) | 2,500.06 mi (4,023.45 km) |
| Hilo to Oceanside (New York) | 4,905.38 mi (7,894.44 km) |
| Hilo to Ocoee (Florida) | 4,609.75 mi (7,418.67 km) |
| Hilo to Oconomowoc (Wisconsin) | 4,130.40 mi (6,647.24 km) |
| Hilo to Odenton (Maryland) | 4,763.02 mi (7,665.34 km) |
