| Gorna Oryahovitsa to Oswego (Illinois) | 5,288.80 mi (8,511.49 km) |
| Gorna Oryahovitsa to Oswego (New York) | 4,767.95 mi (7,673.27 km) |
| Gorna Oryahovitsa to Otsego (Minnesota) | 5,282.68 mi (8,501.65 km) |
| Gorna Oryahovitsa to Ottawa (Illinois) | 5,322.62 mi (8,565.93 km) |
| Gorna Oryahovitsa to Ottawa (Kansas) | 5,689.88 mi (9,156.97 km) |
| Gorna Oryahovitsa to Ottumwa (Iowa) | 5,464.75 mi (8,794.67 km) |
| Gorna Oryahovitsa to Overland (Missouri) | 5,513.37 mi (8,872.92 km) |
| Gorna Oryahovitsa to Overland Park (Kansas) | 5,654.82 mi (9,100.56 km) |
| Gorna Oryahovitsa to Overlea (Maryland) | 4,952.98 mi (7,971.05 km) |
| Gorna Oryahovitsa to Oviedo (Florida) | 5,654.87 mi (9,100.64 km) |
| Gorna Oryahovitsa to Owasso (Oklahoma) | 5,833.72 mi (9,388.46 km) |
| Gorna Oryahovitsa to Owatonna (Minnesota) | 5,331.52 mi (8,580.25 km) |
| Gorna Oryahovitsa to Owensboro (Kentucky) | 5,441.86 mi (8,757.82 km) |
| Gorna Oryahovitsa to Owings Mills (Maryland) | 4,961.79 mi (7,985.23 km) |
| Gorna Oryahovitsa to Owosso (Michigan) | 5,075.23 mi (8,167.80 km) |
