| Kardzhali to Orangevale (California) | 6,501.45 mi (10,463.07 km) |
| Kardzhali to Orchards (Washington) | 6,086.21 mi (9,794.81 km) |
| Kardzhali to Orcutt (California) | 6,722.70 mi (10,819.13 km) |
| Kardzhali to Oregon (Ohio) | 5,169.89 mi (8,320.14 km) |
| Kardzhali to Oregon (Wisconsin) | 5,326.12 mi (8,571.57 km) |
| Kardzhali to Oregon City (Oregon) | 6,109.42 mi (9,832.16 km) |
| Kardzhali to Orem (Utah) | 6,168.59 mi (9,927.38 km) |
| Kardzhali to Orinda (California) | 6,573.56 mi (10,579.13 km) |
| Kardzhali to Orland Park (Illinois) | 5,336.46 mi (8,588.20 km) |
| Kardzhali to Orlando (Florida) | 5,709.90 mi (9,189.19 km) |
| Kardzhali to Ormond Beach (Florida) | 5,660.38 mi (9,109.50 km) |
| Kardzhali to Oro Valley (Arizona) | 6,615.10 mi (10,645.97 km) |
| Kardzhali to Oroville (California) | 6,457.84 mi (10,392.89 km) |
| Kardzhali to Oshkosh (Wisconsin) | 5,242.95 mi (8,437.71 km) |
| Kardzhali to Oskaloosa (Iowa) | 5,522.35 mi (8,887.36 km) |
