| Tomar to Olympia Heights (Florida) | 4,181.76 mi (6,729.90 km) |
| Tomar to Omaha (Nebraska) | 4,395.92 mi (7,074.54 km) |
| Tomar to On Top of the World Designated Place (Florida) | 4,158.89 mi (6,693.08 km) |
| Tomar to Onalaska (Wisconsin) | 4,092.44 mi (6,586.15 km) |
| Tomar to Oneida (New York) | 3,401.41 mi (5,474.05 km) |
| Tomar to Oneonta (New York) | 3,388.04 mi (5,452.52 km) |
| Tomar to Ontario (California) | 5,634.60 mi (9,068.01 km) |
| Tomar to Ontario (Oregon) | 5,149.82 mi (8,287.83 km) |
| Tomar to Opa-locka (Florida) | 4,170.83 mi (6,712.30 km) |
| Tomar to Opelika (Alabama) | 4,189.53 mi (6,742.40 km) |
| Tomar to Opelousas (Louisiana) | 4,602.27 mi (7,406.64 km) |
| Tomar to Orange (California) | 5,654.71 mi (9,100.38 km) |
| Tomar to Orange (Texas) | 4,700.97 mi (7,565.48 km) |
| Tomar to Orange City (Florida) | 4,113.54 mi (6,620.10 km) |
| Tomar to Orangeburg (South Carolina) | 3,934.22 mi (6,331.51 km) |
