| Smolyan to Isselburg | 1,111.63 mi (1,789.00 km) |
| Smolyan to Issum | 1,102.45 mi (1,774.23 km) |
| Smolyan to Itzehoe | 1,101.85 mi (1,773.26 km) |
| Smolyan to Jena | 897.05 mi (1,443.66 km) |
| Smolyan to Jever | 1,134.37 mi (1,825.59 km) |
| Smolyan to Jork | 1,078.19 mi (1,735.18 km) |
| Smolyan to Juchen | 1,084.05 mi (1,744.61 km) |
| Smolyan to Julich | 1,083.31 mi (1,743.42 km) |
| Smolyan to Juterbog | 903.15 mi (1,453.48 km) |
| Smolyan to Kaarst | 1,083.82 mi (1,744.24 km) |
| Smolyan to Kaiserslautern | 979.88 mi (1,576.97 km) |
| Smolyan to Kalkar | 1,114.48 mi (1,793.59 km) |
| Smolyan to Kall | 1,063.50 mi (1,711.54 km) |
| Smolyan to Kaltenkirchen | 1,084.89 mi (1,745.96 km) |
| Smolyan to Kamen | 1,059.56 mi (1,705.20 km) |
