| Katwijk to Smolyan | 1,199.40 mi (1,930.25 km) |
| Katwijk to Sofia | 1,095.32 mi (1,762.75 km) |
| Katwijk to Sopot | 1,150.71 mi (1,851.89 km) |
| Katwijk to Sozopol | 1,274.67 mi (2,051.39 km) |
| Katwijk to Sredets | 1,258.20 mi (2,024.87 km) |
| Katwijk to Stamboliyski | 1,166.82 mi (1,877.81 km) |
| Katwijk to Stara Zagora | 1,194.83 mi (1,922.89 km) |
| Katwijk to Svilengrad | 1,246.66 mi (2,006.31 km) |
| Katwijk to Svishtov | 1,130.34 mi (1,819.11 km) |
| Katwijk to Targovishte | 1,194.40 mi (1,922.20 km) |
| Katwijk to Teteven | 1,120.16 mi (1,802.73 km) |
| Katwijk to Troyan | 1,138.72 mi (1,832.59 km) |
| Katwijk to Tryavna | 1,169.35 mi (1,881.89 km) |
| Katwijk to Tutrakan | 1,161.79 mi (1,869.71 km) |
| Katwijk to Varna | 1,248.40 mi (2,009.11 km) |
