| Boucau to Roeselare | 556.22 mi (895.15 km) |
| Boucau to Ronse | 553.26 mi (890.38 km) |
| Boucau to Rotselaar | 589.33 mi (948.44 km) |
| Boucau to Rumst | 590.58 mi (950.45 km) |
| Boucau to Saint-Ghislain | 539.58 mi (868.37 km) |
| Boucau to Saint-Nicolas | 591.37 mi (951.71 km) |
| Boucau to Saint-Vith | 588.87 mi (947.69 km) |
| Boucau to Scherpenheuvel | 598.88 mi (963.81 km) |
| Boucau to Schilde | 602.81 mi (970.13 km) |
| Boucau to Schoten | 602.36 mi (969.41 km) |
| Boucau to Seneffe | 554.19 mi (891.88 km) |
| Boucau to Seraing | 587.72 mi (945.85 km) |
| Boucau to Sint-Amandsberg | 574.90 mi (925.21 km) |
| Boucau to Sint-Andries | 573.36 mi (922.73 km) |
| Boucau to Sint-Genesius-Rode | 568.89 mi (915.55 km) |
