| Harnes to Cabestany | 536.47 mi (863.37 km) |
| Harnes to Cabries | 497.72 mi (801.00 km) |
| Harnes to Cachan | 117.07 mi (188.41 km) |
| Harnes to Caen | 170.18 mi (273.89 km) |
| Harnes to Cagnes-sur-Mer | 509.08 mi (819.29 km) |
| Harnes to Cahors | 419.98 mi (675.89 km) |
| Harnes to Calais | 57.60 mi (92.70 km) |
| Harnes to Caluire-et-Cuire | 333.48 mi (536.68 km) |
| Harnes to Cambrai | 23.57 mi (37.93 km) |
| Harnes to Canet-en-Roussillon | 534.76 mi (860.62 km) |
| Harnes to Cannes | 513.92 mi (827.08 km) |
| Harnes to Canteleu | 107.82 mi (173.52 km) |
| Harnes to Capbreton | 512.28 mi (824.44 km) |
| Harnes to Carcassonne | 500.58 mi (805.60 km) |
| Harnes to Carmaux | 443.29 mi (713.41 km) |
