| Omurtag to Oswego (Illinois) | 5,315.71 mi (8,554.81 km) |
| Omurtag to Oswego (New York) | 4,796.85 mi (7,719.79 km) |
| Omurtag to Otsego (Minnesota) | 5,307.19 mi (8,541.10 km) |
| Omurtag to Ottawa (Illinois) | 5,349.52 mi (8,609.21 km) |
| Omurtag to Ottawa (Kansas) | 5,715.93 mi (9,198.89 km) |
| Omurtag to Ottumwa (Iowa) | 5,490.86 mi (8,836.68 km) |
| Omurtag to Overland (Missouri) | 5,540.66 mi (8,916.83 km) |
| Omurtag to Overland Park (Kansas) | 5,680.95 mi (9,142.60 km) |
| Omurtag to Overlea (Maryland) | 4,983.08 mi (8,019.50 km) |
| Omurtag to Oviedo (Florida) | 5,686.70 mi (9,151.85 km) |
| Omurtag to Owasso (Oklahoma) | 5,860.25 mi (9,431.16 km) |
| Omurtag to Owatonna (Minnesota) | 5,356.50 mi (8,620.45 km) |
| Omurtag to Owensboro (Kentucky) | 5,470.18 mi (8,803.41 km) |
| Omurtag to Owings Mills (Maryland) | 4,991.83 mi (8,033.58 km) |
| Omurtag to Owosso (Michigan) | 5,102.70 mi (8,212.01 km) |
