| Smolyan to Twist | 1,122.09 mi (1,805.83 km) |
| Smolyan to Twistringen | 1,076.26 mi (1,732.08 km) |
| Smolyan to Ubach-Palenberg | 1,092.31 mi (1,757.90 km) |
| Smolyan to Uberherrn | 1,017.29 mi (1,637.17 km) |
| Smolyan to Uberlingen | 872.42 mi (1,404.03 km) |
| Smolyan to Ubstadt-Weiher | 936.77 mi (1,507.59 km) |
| Smolyan to Ueckermunde | 972.94 mi (1,565.79 km) |
| Smolyan to Uelzen | 1,024.55 mi (1,648.85 km) |
| Smolyan to Uetersen | 1,085.90 mi (1,747.59 km) |
| Smolyan to Uetze | 1,011.92 mi (1,628.52 km) |
| Smolyan to Uhingen | 883.10 mi (1,421.21 km) |
| Smolyan to Ulm | 857.37 mi (1,379.80 km) |
| Smolyan to Unna | 1,056.52 mi (1,700.31 km) |
| Smolyan to Unterfohring | 783.41 mi (1,260.77 km) |
| Smolyan to Unterhaching | 780.69 mi (1,256.41 km) |
