| Santomera to Olympia Heights (Florida) | 4,591.85 mi (7,389.86 km) |
| Santomera to Omaha (Nebraska) | 4,781.81 mi (7,695.59 km) |
| Santomera to On Top of the World Designated Place (Florida) | 4,569.05 mi (7,353.17 km) |
| Santomera to Onalaska (Wisconsin) | 4,477.02 mi (7,205.07 km) |
| Santomera to Oneida (New York) | 3,799.72 mi (6,115.06 km) |
| Santomera to Oneonta (New York) | 3,787.91 mi (6,096.05 km) |
| Santomera to Ontario (California) | 6,006.90 mi (9,667.18 km) |
| Santomera to Ontario (Oregon) | 5,498.12 mi (8,848.37 km) |
| Santomera to Opa-locka (Florida) | 4,580.95 mi (7,372.32 km) |
| Santomera to Opelika (Alabama) | 4,596.96 mi (7,398.09 km) |
| Santomera to Opelousas (Louisiana) | 5,008.39 mi (8,060.23 km) |
| Santomera to Orange (California) | 6,027.15 mi (9,699.76 km) |
| Santomera to Orange (Texas) | 5,106.55 mi (8,218.20 km) |
| Santomera to Orange City (Florida) | 4,523.84 mi (7,280.42 km) |
| Santomera to Orangeburg (South Carolina) | 4,342.68 mi (6,988.87 km) |
