| Portimao to Chojnice | 1,688.37 mi (2,717.18 km) |
| Portimao to Chojnow | 1,543.63 mi (2,484.24 km) |
| Portimao to Chorzow | 1,631.84 mi (2,626.20 km) |
| Portimao to Choszczno | 1,594.73 mi (2,566.46 km) |
| Portimao to Chrzanow | 1,645.71 mi (2,648.52 km) |
| Portimao to Ciechanow | 1,771.73 mi (2,851.32 km) |
| Portimao to Ciechocinek | 1,703.77 mi (2,741.95 km) |
| Portimao to Cieszyn | 1,604.09 mi (2,581.53 km) |
| Portimao to Czarna Bialostocka | 1,884.12 mi (3,032.20 km) |
| Portimao to Czarnkow | 1,624.63 mi (2,614.59 km) |
| Portimao to Czechowice-Dziedzice | 1,623.76 mi (2,613.20 km) |
| Portimao to Czeladz | 1,638.16 mi (2,636.36 km) |
| Portimao to Czersk Pomorski | 1,706.47 mi (2,746.30 km) |
| Portimao to Czestochowa | 1,652.44 mi (2,659.34 km) |
| Portimao to Czluchow | 1,680.80 mi (2,704.99 km) |
