| Holyhead to Chaudfontaine | 475.51 mi (765.26 km) |
| Holyhead to Chaumont-Gistoux | 435.87 mi (701.46 km) |
| Holyhead to Chimay | 444.19 mi (714.85 km) |
| Holyhead to Ciney | 464.38 mi (747.35 km) |
| Holyhead to Colfontaine | 413.54 mi (665.53 km) |
| Holyhead to Courcelles | 431.34 mi (694.18 km) |
| Holyhead to Court-Saint-Etienne | 432.61 mi (696.22 km) |
| Holyhead to Couvin | 450.34 mi (724.75 km) |
| Holyhead to Damme | 363.37 mi (584.79 km) |
| Holyhead to De Haan | 352.98 mi (568.07 km) |
| Holyhead to De Panne | 341.60 mi (549.75 km) |
| Holyhead to De Pinte | 385.37 mi (620.19 km) |
| Holyhead to Deerlijk | 378.89 mi (609.77 km) |
| Holyhead to Deinze | 381.42 mi (613.84 km) |
| Holyhead to Denderleeuw | 405.82 mi (653.10 km) |
