| Rombas to Olympia Heights (Florida) | 4,737.62 mi (7,624.46 km) |
| Rombas to Omaha (Nebraska) | 4,604.99 mi (7,411.02 km) |
| Rombas to On Top of the World Designated Place (Florida) | 4,655.56 mi (7,492.40 km) |
| Rombas to Onalaska (Wisconsin) | 4,302.08 mi (6,923.53 km) |
| Rombas to Oneida (New York) | 3,740.95 mi (6,020.48 km) |
| Rombas to Oneonta (New York) | 3,742.88 mi (6,023.58 km) |
| Rombas to Ontario (California) | 5,726.57 mi (9,216.03 km) |
| Rombas to Ontario (Oregon) | 5,134.56 mi (8,263.28 km) |
| Rombas to Opa-locka (Florida) | 4,725.31 mi (7,604.64 km) |
| Rombas to Opelika (Alabama) | 4,612.09 mi (7,422.44 km) |
| Rombas to Opelousas (Louisiana) | 4,992.23 mi (8,034.22 km) |
| Rombas to Orange (California) | 5,746.95 mi (9,248.82 km) |
| Rombas to Orange (Texas) | 5,080.31 mi (8,175.98 km) |
| Rombas to Orange City (Florida) | 4,621.19 mi (7,437.09 km) |
| Rombas to Orangeburg (South Carolina) | 4,384.33 mi (7,055.89 km) |
