| Sittard to Karlovo | 1,060.70 mi (1,707.03 km) |
| Sittard to Karnobat | 1,147.72 mi (1,847.08 km) |
| Sittard to Kavarna | 1,170.48 mi (1,883.71 km) |
| Sittard to Kazanlak | 1,085.21 mi (1,746.48 km) |
| Sittard to Knezha | 995.21 mi (1,601.64 km) |
| Sittard to Kostinbrod | 991.26 mi (1,595.28 km) |
| Sittard to Kozloduy | 969.42 mi (1,560.13 km) |
| Sittard to Kyustendil | 995.64 mi (1,602.33 km) |
| Sittard to Levski | 1,042.66 mi (1,677.99 km) |
| Sittard to Lom | 948.00 mi (1,525.66 km) |
| Sittard to Lovech | 1,035.86 mi (1,667.06 km) |
| Sittard to Lukovit | 1,011.31 mi (1,627.55 km) |
| Sittard to Lyaskovets | 1,077.19 mi (1,733.57 km) |
| Sittard to Mezdra | 995.18 mi (1,601.58 km) |
| Sittard to Momchilgrad | 1,134.41 mi (1,825.65 km) |
