| Boulder to Tutzing | 5,226.52 mi (8,411.26 km) |
| Boulder to Twist | 4,867.31 mi (7,833.18 km) |
| Boulder to Twistringen | 4,909.37 mi (7,900.87 km) |
| Boulder to Ubach-Palenberg | 4,915.08 mi (7,910.06 km) |
| Boulder to Uberherrn | 5,010.79 mi (8,064.09 km) |
| Boulder to Uberlingen | 5,163.20 mi (8,309.37 km) |
| Boulder to Ubstadt-Weiher | 5,078.81 mi (8,173.56 km) |
| Boulder to Ueckermunde | 5,024.91 mi (8,086.81 km) |
| Boulder to Uelzen | 4,960.18 mi (7,982.64 km) |
| Boulder to Uetersen | 4,899.06 mi (7,884.27 km) |
| Boulder to Uetze | 4,972.85 mi (8,003.04 km) |
| Boulder to Uhingen | 5,132.52 mi (8,259.99 km) |
| Boulder to Ulm | 5,160.07 mi (8,304.33 km) |
| Boulder to Unna | 4,937.76 mi (7,946.56 km) |
| Boulder to Unterfohring | 5,224.79 mi (8,408.49 km) |
