| Holyhead to Creutzwald | 565.07 mi (909.39 km) |
| Holyhead to Croissy-sur-Seine | 424.12 mi (682.55 km) |
| Holyhead to Croix | 377.48 mi (607.49 km) |
| Holyhead to Crosne | 442.16 mi (711.59 km) |
| Holyhead to Cuers | 850.39 mi (1,368.57 km) |
| Holyhead to Cugnaux | 727.99 mi (1,171.59 km) |
| Holyhead to Cusset | 612.61 mi (985.91 km) |
| Holyhead to Dammarie-le-Lys | 457.79 mi (736.75 km) |
| Holyhead to Dammartin-en-Goele | 431.79 mi (694.90 km) |
| Holyhead to Dardilly | 666.50 mi (1,072.63 km) |
| Holyhead to Darnetal | 365.17 mi (587.68 km) |
| Holyhead to Dax | 682.98 mi (1,099.15 km) |
| Holyhead to Decines-Charpieu | 674.34 mi (1,085.24 km) |
| Holyhead to Denain | 399.62 mi (643.13 km) |
| Holyhead to Deuil-la-Barre | 424.64 mi (683.39 km) |
