| Donegal to Cabestany | 966.33 mi (1,555.16 km) |
| Donegal to Cabries | 983.10 mi (1,582.14 km) |
| Donegal to Cachan | 602.03 mi (968.87 km) |
| Donegal to Caen | 501.26 mi (806.70 km) |
| Donegal to Cagnes-sur-Mer | 1,021.26 mi (1,643.56 km) |
| Donegal to Cahors | 823.32 mi (1,325.00 km) |
| Donegal to Calais | 488.09 mi (785.51 km) |
| Donegal to Caluire-et-Cuire | 835.70 mi (1,344.92 km) |
| Donegal to Cambrai | 568.45 mi (914.83 km) |
| Donegal to Canet-en-Roussillon | 966.30 mi (1,555.11 km) |
| Donegal to Cannes | 1,023.51 mi (1,647.18 km) |
| Donegal to Canteleu | 528.61 mi (850.71 km) |
| Donegal to Capbreton | 817.64 mi (1,315.86 km) |
| Donegal to Carcassonne | 920.09 mi (1,480.74 km) |
| Donegal to Carmaux | 864.31 mi (1,390.98 km) |
