| Donostia to Chojnice | 1,139.56 mi (1,833.94 km) |
| Donostia to Chojnow | 998.97 mi (1,607.69 km) |
| Donostia to Chorzow | 1,095.93 mi (1,763.72 km) |
| Donostia to Choszczno | 1,045.65 mi (1,682.81 km) |
| Donostia to Chrzanow | 1,111.46 mi (1,788.72 km) |
| Donostia to Ciechanow | 1,226.53 mi (1,973.91 km) |
| Donostia to Ciechocinek | 1,157.06 mi (1,862.12 km) |
| Donostia to Cieszyn | 1,071.19 mi (1,723.91 km) |
| Donostia to Czarna Bialostocka | 1,339.69 mi (2,156.02 km) |
| Donostia to Czarnkow | 1,076.39 mi (1,732.28 km) |
| Donostia to Czechowice-Dziedzice | 1,090.35 mi (1,754.74 km) |
| Donostia to Czeladz | 1,102.23 mi (1,773.87 km) |
| Donostia to Czersk Pomorski | 1,157.72 mi (1,863.17 km) |
| Donostia to Czestochowa | 1,113.95 mi (1,792.73 km) |
| Donostia to Czluchow | 1,131.95 mi (1,821.70 km) |
