| Ponca City to Karlovo | 5,846.79 mi (9,409.50 km) |
| Ponca City to Karnobat | 5,921.96 mi (9,530.47 km) |
| Ponca City to Kavarna | 5,925.50 mi (9,536.17 km) |
| Ponca City to Kazanlak | 5,868.68 mi (9,444.73 km) |
| Ponca City to Knezha | 5,778.69 mi (9,299.90 km) |
| Ponca City to Kostinbrod | 5,782.43 mi (9,305.92 km) |
| Ponca City to Kozloduy | 5,752.45 mi (9,257.67 km) |
| Ponca City to Kyustendil | 5,789.86 mi (9,317.88 km) |
| Ponca City to Levski | 5,821.53 mi (9,368.85 km) |
| Ponca City to Lom | 5,733.16 mi (9,226.63 km) |
| Ponca City to Lovech | 5,818.93 mi (9,364.66 km) |
| Ponca City to Lukovit | 5,796.59 mi (9,328.71 km) |
| Ponca City to Lyaskovets | 5,855.00 mi (9,422.71 km) |
| Ponca City to Mezdra | 5,782.83 mi (9,306.57 km) |
| Ponca City to Momchilgrad | 5,924.25 mi (9,534.17 km) |
