| Oklahoma City to Devnya | 5,995.78 mi (9,649.28 km) |
| Oklahoma City to Dimitrovgrad | 5,987.69 mi (9,636.25 km) |
| Oklahoma City to Dobrich | 5,986.67 mi (9,634.62 km) |
| Oklahoma City to Dospat | 5,956.89 mi (9,586.69 km) |
| Oklahoma City to Dupnitsa | 5,888.86 mi (9,477.20 km) |
| Oklahoma City to Elhovo | 6,015.44 mi (9,680.91 km) |
| Oklahoma City to Etropole | 5,892.22 mi (9,482.62 km) |
| Oklahoma City to Gabrovo | 5,937.25 mi (9,555.08 km) |
| Oklahoma City to Gorna Oryahovitsa | 5,936.51 mi (9,553.88 km) |
| Oklahoma City to Gotse Delchev | 5,945.43 mi (9,568.25 km) |
| Oklahoma City to Harmanli | 6,004.09 mi (9,662.65 km) |
| Oklahoma City to Haskovo | 5,992.40 mi (9,643.84 km) |
| Oklahoma City to Ihtiman | 5,905.32 mi (9,503.70 km) |
| Oklahoma City to Isperih | 5,945.49 mi (9,568.34 km) |
| Oklahoma City to Kardzhali | 5,999.63 mi (9,655.47 km) |
