| Balchik to Oswego (Illinois) | 5,359.97 mi (8,626.04 km) |
| Balchik to Oswego (New York) | 4,847.89 mi (7,801.93 km) |
| Balchik to Otsego (Minnesota) | 5,343.85 mi (8,600.09 km) |
| Balchik to Ottawa (Illinois) | 5,393.70 mi (8,680.33 km) |
| Balchik to Ottawa (Kansas) | 5,757.29 mi (9,265.46 km) |
| Balchik to Ottumwa (Iowa) | 5,532.46 mi (8,903.64 km) |
| Balchik to Overland (Missouri) | 5,586.07 mi (8,989.91 km) |
| Balchik to Overland Park (Kansas) | 5,722.56 mi (9,209.56 km) |
| Balchik to Overlea (Maryland) | 5,038.25 mi (8,108.28 km) |
| Balchik to Oviedo (Florida) | 5,748.05 mi (9,250.59 km) |
| Balchik to Owasso (Oklahoma) | 5,903.11 mi (9,500.14 km) |
| Balchik to Owatonna (Minnesota) | 5,394.58 mi (8,681.74 km) |
| Balchik to Owensboro (Kentucky) | 5,519.07 mi (8,882.08 km) |
| Balchik to Owings Mills (Maryland) | 5,046.77 mi (8,121.98 km) |
| Balchik to Owosso (Michigan) | 5,148.84 mi (8,286.26 km) |
