| Zwijndrecht to Karlovo | 1,132.49 mi (1,822.56 km) |
| Zwijndrecht to Karnobat | 1,217.65 mi (1,959.62 km) |
| Zwijndrecht to Kavarna | 1,237.89 mi (1,992.19 km) |
| Zwijndrecht to Kazanlak | 1,156.53 mi (1,861.26 km) |
| Zwijndrecht to Knezha | 1,066.39 mi (1,716.19 km) |
| Zwijndrecht to Kostinbrod | 1,064.15 mi (1,712.59 km) |
| Zwijndrecht to Kozloduy | 1,040.46 mi (1,674.46 km) |
| Zwijndrecht to Kyustendil | 1,069.58 mi (1,721.32 km) |
| Zwijndrecht to Levski | 1,113.09 mi (1,791.35 km) |
| Zwijndrecht to Lom | 1,019.43 mi (1,640.62 km) |
| Zwijndrecht to Lovech | 1,107.03 mi (1,781.59 km) |
| Zwijndrecht to Lukovit | 1,082.87 mi (1,742.71 km) |
| Zwijndrecht to Lyaskovets | 1,147.52 mi (1,846.76 km) |
| Zwijndrecht to Mezdra | 1,067.21 mi (1,717.51 km) |
| Zwijndrecht to Momchilgrad | 1,207.08 mi (1,942.61 km) |
