| Kerkrade to Smolyan | 1,092.55 mi (1,758.29 km) |
| Kerkrade to Sofia | 988.86 mi (1,591.42 km) |
| Kerkrade to Sopot | 1,046.34 mi (1,683.92 km) |
| Kerkrade to Sozopol | 1,174.31 mi (1,889.87 km) |
| Kerkrade to Sredets | 1,156.88 mi (1,861.82 km) |
| Kerkrade to Stamboliyski | 1,060.90 mi (1,707.35 km) |
| Kerkrade to Stara Zagora | 1,091.32 mi (1,756.31 km) |
| Kerkrade to Svilengrad | 1,142.41 mi (1,838.54 km) |
| Kerkrade to Svishtov | 1,029.57 mi (1,656.94 km) |
| Kerkrade to Targovishte | 1,094.57 mi (1,761.53 km) |
| Kerkrade to Teteven | 1,015.70 mi (1,634.61 km) |
| Kerkrade to Troyan | 1,034.88 mi (1,665.49 km) |
| Kerkrade to Tryavna | 1,066.72 mi (1,716.72 km) |
| Kerkrade to Tutrakan | 1,064.48 mi (1,713.11 km) |
| Kerkrade to Varna | 1,150.61 mi (1,851.73 km) |
