| Difficult Run to Tutzing | 4,243.19 mi (6,828.76 km) |
| Difficult Run to Twist | 3,935.39 mi (6,333.39 km) |
| Difficult Run to Twistringen | 3,992.76 mi (6,425.73 km) |
| Difficult Run to Ubach-Palenberg | 3,944.62 mi (6,348.25 km) |
| Difficult Run to Uberherrn | 4,014.39 mi (6,460.53 km) |
| Difficult Run to Uberlingen | 4,160.25 mi (6,695.27 km) |
| Difficult Run to Ubstadt-Weiher | 4,095.69 mi (6,591.37 km) |
| Difficult Run to Ueckermunde | 4,167.57 mi (6,707.06 km) |
| Difficult Run to Uelzen | 4,061.11 mi (6,535.72 km) |
| Difficult Run to Uetersen | 4,006.96 mi (6,448.58 km) |
| Difficult Run to Uetze | 4,061.67 mi (6,536.63 km) |
| Difficult Run to Uhingen | 4,149.03 mi (6,677.22 km) |
| Difficult Run to Ulm | 4,174.47 mi (6,718.16 km) |
| Difficult Run to Unna | 3,990.25 mi (6,421.69 km) |
| Difficult Run to Unterfohring | 4,249.31 mi (6,838.61 km) |
