| Varna to Oswego (Illinois) | 5,362.11 mi (8,629.49 km) |
| Varna to Oswego (New York) | 4,848.35 mi (7,802.66 km) |
| Varna to Otsego (Minnesota) | 5,347.75 mi (8,606.38 km) |
| Varna to Ottawa (Illinois) | 5,395.87 mi (8,683.81 km) |
| Varna to Ottawa (Kansas) | 5,760.13 mi (9,270.03 km) |
| Varna to Ottumwa (Iowa) | 5,535.24 mi (8,908.11 km) |
| Varna to Overland (Missouri) | 5,587.95 mi (8,992.93 km) |
| Varna to Overland Park (Kansas) | 5,725.34 mi (9,214.04 km) |
| Varna to Overlea (Maryland) | 5,037.64 mi (8,107.30 km) |
| Varna to Oviedo (Florida) | 5,745.78 mi (9,246.94 km) |
| Varna to Owasso (Oklahoma) | 5,905.60 mi (9,504.15 km) |
| Varna to Owatonna (Minnesota) | 5,398.16 mi (8,687.50 km) |
| Varna to Owensboro (Kentucky) | 5,520.09 mi (8,883.72 km) |
| Varna to Owings Mills (Maryland) | 5,046.22 mi (8,121.11 km) |
| Varna to Owosso (Michigan) | 5,150.52 mi (8,288.96 km) |
