| Sulphur Springs to Karlovo | 5,986.63 mi (9,634.55 km) |
| Sulphur Springs to Karnobat | 6,066.18 mi (9,762.57 km) |
| Sulphur Springs to Kavarna | 6,074.50 mi (9,775.96 km) |
| Sulphur Springs to Kazanlak | 6,009.64 mi (9,671.59 km) |
| Sulphur Springs to Knezha | 5,919.42 mi (9,526.39 km) |
| Sulphur Springs to Kostinbrod | 5,919.56 mi (9,526.62 km) |
| Sulphur Springs to Kozloduy | 5,893.27 mi (9,484.30 km) |
| Sulphur Springs to Kyustendil | 5,924.43 mi (9,534.45 km) |
| Sulphur Springs to Levski | 5,963.97 mi (9,598.09 km) |
| Sulphur Springs to Lom | 5,873.13 mi (9,451.90 km) |
| Sulphur Springs to Lovech | 5,959.92 mi (9,591.56 km) |
| Sulphur Springs to Lukovit | 5,936.66 mi (9,554.14 km) |
| Sulphur Springs to Lyaskovets | 5,997.89 mi (9,652.67 km) |
| Sulphur Springs to Mezdra | 5,921.85 mi (9,530.29 km) |
| Sulphur Springs to Momchilgrad | 6,062.34 mi (9,756.39 km) |
