| Blagoevgrad to Oswego (Illinois) | 5,249.26 mi (8,447.86 km) |
| Blagoevgrad to Oswego (New York) | 4,716.15 mi (7,589.91 km) |
| Blagoevgrad to Otsego (Minnesota) | 5,257.29 mi (8,460.80 km) |
| Blagoevgrad to Ottawa (Illinois) | 5,283.17 mi (8,502.44 km) |
| Blagoevgrad to Ottawa (Kansas) | 5,655.22 mi (9,101.20 km) |
| Blagoevgrad to Ottumwa (Iowa) | 5,429.96 mi (8,738.67 km) |
| Blagoevgrad to Overland (Missouri) | 5,471.36 mi (8,805.30 km) |
| Blagoevgrad to Overland Park (Kansas) | 5,619.76 mi (9,044.12 km) |
| Blagoevgrad to Overlea (Maryland) | 4,892.83 mi (7,874.25 km) |
| Blagoevgrad to Oviedo (Florida) | 5,581.50 mi (8,982.55 km) |
| Blagoevgrad to Owasso (Oklahoma) | 5,796.06 mi (9,327.86 km) |
| Blagoevgrad to Owatonna (Minnesota) | 5,303.44 mi (8,535.06 km) |
| Blagoevgrad to Owensboro (Kentucky) | 5,393.32 mi (8,679.71 km) |
| Blagoevgrad to Owings Mills (Maryland) | 4,902.10 mi (7,889.16 km) |
| Blagoevgrad to Owosso (Michigan) | 5,032.44 mi (8,098.93 km) |
