| Omurtag to Olympia Heights (Florida) | 5,794.29 mi (9,325.01 km) |
| Omurtag to Omaha (Nebraska) | 5,598.42 mi (9,009.79 km) |
| Omurtag to On Top of the World Designated Place (Florida) | 5,711.14 mi (9,191.20 km) |
| Omurtag to Onalaska (Wisconsin) | 5,300.93 mi (8,531.03 km) |
| Omurtag to Oneida (New York) | 4,781.48 mi (7,695.05 km) |
| Omurtag to Oneonta (New York) | 4,786.09 mi (7,702.46 km) |
| Omurtag to Ontario (California) | 6,643.48 mi (10,691.65 km) |
| Omurtag to Ontario (Oregon) | 6,006.83 mi (9,667.05 km) |
| Omurtag to Opa-locka (Florida) | 5,782.00 mi (9,305.23 km) |
| Omurtag to Opelika (Alabama) | 5,660.26 mi (9,109.31 km) |
| Omurtag to Opelousas (Louisiana) | 6,032.49 mi (9,708.36 km) |
| Omurtag to Orange (California) | 6,663.48 mi (10,723.84 km) |
| Omurtag to Orange (Texas) | 6,117.72 mi (9,845.52 km) |
| Omurtag to Orange City (Florida) | 5,677.37 mi (9,136.84 km) |
| Omurtag to Orangeburg (South Carolina) | 5,436.88 mi (8,749.81 km) |
