| Kostinbrod to Olympia Heights (Florida) | 5,661.93 mi (9,112.00 km) |
| Kostinbrod to Omaha (Nebraska) | 5,507.33 mi (8,863.19 km) |
| Kostinbrod to On Top of the World Designated Place (Florida) | 5,585.11 mi (8,988.36 km) |
| Kostinbrod to Onalaska (Wisconsin) | 5,207.53 mi (8,380.72 km) |
| Kostinbrod to Oneida (New York) | 4,668.90 mi (7,513.87 km) |
| Kostinbrod to Oneonta (New York) | 4,671.84 mi (7,518.60 km) |
| Kostinbrod to Ontario (California) | 6,578.17 mi (10,586.54 km) |
| Kostinbrod to Ontario (Oregon) | 5,952.26 mi (9,579.23 km) |
| Kostinbrod to Opa-locka (Florida) | 5,649.76 mi (9,092.41 km) |
| Kostinbrod to Opelika (Alabama) | 5,542.59 mi (8,919.94 km) |
| Kostinbrod to Opelousas (Louisiana) | 5,920.45 mi (9,528.05 km) |
| Kostinbrod to Orange (California) | 6,598.32 mi (10,618.96 km) |
| Kostinbrod to Orange (Texas) | 6,007.43 mi (9,668.03 km) |
| Kostinbrod to Orange City (Florida) | 5,550.00 mi (8,931.86 km) |
| Kostinbrod to Orangeburg (South Carolina) | 5,315.13 mi (8,553.87 km) |
