| Port Glasgow to Cabestany | 976.74 mi (1,571.91 km) |
| Port Glasgow to Cabries | 971.21 mi (1,563.00 km) |
| Port Glasgow to Cachan | 574.93 mi (925.27 km) |
| Port Glasgow to Caen | 500.46 mi (805.42 km) |
| Port Glasgow to Cagnes-sur-Mer | 995.66 mi (1,602.36 km) |
| Port Glasgow to Cahors | 837.90 mi (1,348.46 km) |
| Port Glasgow to Calais | 436.95 mi (703.21 km) |
| Port Glasgow to Caluire-et-Cuire | 813.01 mi (1,308.41 km) |
| Port Glasgow to Cambrai | 515.65 mi (829.86 km) |
| Port Glasgow to Canet-en-Roussillon | 976.10 mi (1,570.87 km) |
| Port Glasgow to Cannes | 999.48 mi (1,608.52 km) |
| Port Glasgow to Canteleu | 507.68 mi (817.03 km) |
| Port Glasgow to Capbreton | 861.40 mi (1,386.29 km) |
| Port Glasgow to Carcassonne | 932.86 mi (1,501.30 km) |
| Port Glasgow to Carmaux | 874.67 mi (1,407.64 km) |
