| Efringen-Kirchen to Smolyan | 938.55 mi (1,510.45 km) |
| Efringen-Kirchen to Sofia | 838.67 mi (1,349.72 km) |
| Efringen-Kirchen to Sopot | 903.47 mi (1,454.00 km) |
| Efringen-Kirchen to Sozopol | 1,043.91 mi (1,680.00 km) |
| Efringen-Kirchen to Sredets | 1,023.38 mi (1,646.98 km) |
| Efringen-Kirchen to Stamboliyski | 911.41 mi (1,466.77 km) |
| Efringen-Kirchen to Stara Zagora | 950.89 mi (1,530.31 km) |
| Efringen-Kirchen to Svilengrad | 998.08 mi (1,606.26 km) |
| Efringen-Kirchen to Svishtov | 900.97 mi (1,449.97 km) |
| Efringen-Kirchen to Targovishte | 967.78 mi (1,557.49 km) |
| Efringen-Kirchen to Teteven | 873.18 mi (1,405.24 km) |
| Efringen-Kirchen to Troyan | 894.42 mi (1,439.43 km) |
| Efringen-Kirchen to Tryavna | 930.19 mi (1,497.00 km) |
| Efringen-Kirchen to Tutrakan | 947.33 mi (1,524.57 km) |
| Efringen-Kirchen to Varna | 1,029.75 mi (1,657.22 km) |
