| Diekirch to Smolyan | 1,057.48 mi (1,701.84 km) |
| Diekirch to Sofia | 954.63 mi (1,536.33 km) |
| Diekirch to Sopot | 1,014.68 mi (1,632.97 km) |
| Diekirch to Sozopol | 1,147.08 mi (1,846.05 km) |
| Diekirch to Sredets | 1,128.61 mi (1,816.33 km) |
| Diekirch to Stamboliyski | 1,027.17 mi (1,653.07 km) |
| Diekirch to Stara Zagora | 1,060.61 mi (1,706.89 km) |
| Diekirch to Svilengrad | 1,110.63 mi (1,787.38 km) |
| Diekirch to Svishtov | 1,002.36 mi (1,613.14 km) |
| Diekirch to Targovishte | 1,068.19 mi (1,719.09 km) |
| Diekirch to Teteven | 984.02 mi (1,583.63 km) |
| Diekirch to Troyan | 1,003.95 mi (1,615.69 km) |
| Diekirch to Tryavna | 1,037.16 mi (1,669.14 km) |
| Diekirch to Tutrakan | 1,041.00 mi (1,675.32 km) |
| Diekirch to Varna | 1,126.31 mi (1,812.63 km) |
