| Difficult Run to Butzbach | 4,059.93 mi (6,533.82 km) |
| Difficult Run to Buxtehude | 4,013.99 mi (6,459.89 km) |
| Difficult Run to Cadolzburg | 4,177.81 mi (6,723.53 km) |
| Difficult Run to Calbe | 4,138.48 mi (6,660.25 km) |
| Difficult Run to Calw | 4,113.52 mi (6,620.07 km) |
| Difficult Run to Castrop-Rauxel | 3,975.15 mi (6,397.39 km) |
| Difficult Run to Celle | 4,052.45 mi (6,521.79 km) |
| Difficult Run to Cham | 4,256.59 mi (6,850.31 km) |
| Difficult Run to Chemnitz | 4,215.55 mi (6,784.26 km) |
| Difficult Run to Clausthal-Zellerfeld | 4,085.92 mi (6,575.66 km) |
| Difficult Run to Cloppenburg | 3,968.38 mi (6,386.49 km) |
| Difficult Run to Coburg | 4,156.67 mi (6,689.52 km) |
| Difficult Run to Coesfeld | 3,958.39 mi (6,370.42 km) |
| Difficult Run to Cologne | 3,977.52 mi (6,401.21 km) |
| Difficult Run to Coswig | 4,231.80 mi (6,810.43 km) |
