| Holyhead to Saint-Nazaire | 430.39 mi (692.65 km) |
| Holyhead to Saint-Omer | 342.11 mi (550.57 km) |
| Holyhead to Saint-Orens-de-Gameville | 730.41 mi (1,175.47 km) |
| Holyhead to Saint-Ouen | 428.14 mi (689.02 km) |
| Holyhead to Saint-Ouen-l'Aumone | 414.57 mi (667.18 km) |
| Holyhead to Saint-Paul-les-Dax | 681.90 mi (1,097.40 km) |
| Holyhead to Saint-Paul-Trois-Chateaux | 751.04 mi (1,208.68 km) |
| Holyhead to Saint-Philbert-de-Grand-Lieu | 453.17 mi (729.31 km) |
| Holyhead to Saint-Pierre-des-Corps | 472.00 mi (759.61 km) |
| Holyhead to Saint-Pierre-du-Mont | 677.60 mi (1,090.49 km) |
| Holyhead to Saint-Pierre-du-Perray | 448.47 mi (721.75 km) |
| Holyhead to Saint-Pol-sur-Mer | 334.72 mi (538.68 km) |
| Holyhead to Saint-Priest | 677.97 mi (1,091.08 km) |
| Holyhead to Saint-Quentin | 415.30 mi (668.36 km) |
| Holyhead to Saint-Rambert | 669.98 mi (1,078.22 km) |
