| Dobrich to Olympia Heights (Florida) | 5,839.53 mi (9,397.81 km) |
| Dobrich to Omaha (Nebraska) | 5,618.87 mi (9,042.70 km) |
| Dobrich to On Top of the World Designated Place (Florida) | 5,752.27 mi (9,257.39 km) |
| Dobrich to Onalaska (Wisconsin) | 5,322.83 mi (8,566.26 km) |
| Dobrich to Oneida (New York) | 4,814.70 mi (7,748.51 km) |
| Dobrich to Oneonta (New York) | 4,820.30 mi (7,757.52 km) |
| Dobrich to Ontario (California) | 6,649.47 mi (10,701.29 km) |
| Dobrich to Ontario (Oregon) | 6,007.65 mi (9,668.37 km) |
| Dobrich to Opa-locka (Florida) | 5,827.16 mi (9,377.91 km) |
| Dobrich to Opelika (Alabama) | 5,696.17 mi (9,167.10 km) |
| Dobrich to Opelousas (Louisiana) | 6,064.82 mi (9,760.39 km) |
| Dobrich to Orange (California) | 6,669.39 mi (10,733.35 km) |
| Dobrich to Orange (Texas) | 6,148.96 mi (9,895.80 km) |
| Dobrich to Orange City (Florida) | 5,719.37 mi (9,204.44 km) |
| Dobrich to Orangeburg (South Carolina) | 5,475.40 mi (8,811.81 km) |
