| Difficult Run to Chojnice | 4,295.84 mi (6,913.49 km) |
| Difficult Run to Chojnow | 4,317.18 mi (6,947.83 km) |
| Difficult Run to Chorzow | 4,464.69 mi (7,185.23 km) |
| Difficult Run to Choszczno | 4,235.83 mi (6,816.91 km) |
| Difficult Run to Chrzanow | 4,487.67 mi (7,222.21 km) |
| Difficult Run to Ciechanow | 4,434.93 mi (7,137.33 km) |
| Difficult Run to Ciechocinek | 4,367.89 mi (7,029.43 km) |
| Difficult Run to Cieszyn | 4,472.30 mi (7,197.47 km) |
| Difficult Run to Czarna Bialostocka | 4,512.49 mi (7,262.15 km) |
| Difficult Run to Czarnkow | 4,286.66 mi (6,898.72 km) |
| Difficult Run to Czechowice-Dziedzice | 4,480.68 mi (7,210.96 km) |
| Difficult Run to Czeladz | 4,468.53 mi (7,191.41 km) |
| Difficult Run to Czersk Pomorski | 4,307.91 mi (6,932.92 km) |
| Difficult Run to Czestochowa | 4,453.14 mi (7,166.63 km) |
| Difficult Run to Czluchow | 4,290.36 mi (6,904.68 km) |
