| Castlebar to Roeselare | 560.15 mi (901.47 km) |
| Castlebar to Ronse | 584.75 mi (941.06 km) |
| Castlebar to Rotselaar | 622.57 mi (1,001.92 km) |
| Castlebar to Rumst | 607.17 mi (977.15 km) |
| Castlebar to Saint-Ghislain | 602.70 mi (969.96 km) |
| Castlebar to Saint-Nicolas | 664.39 mi (1,069.23 km) |
| Castlebar to Saint-Vith | 698.71 mi (1,124.47 km) |
| Castlebar to Scherpenheuvel | 631.31 mi (1,016.00 km) |
| Castlebar to Schilde | 609.05 mi (980.18 km) |
| Castlebar to Schoten | 605.95 mi (975.18 km) |
| Castlebar to Seneffe | 616.92 mi (992.84 km) |
| Castlebar to Seraing | 664.56 mi (1,069.50 km) |
| Castlebar to Sint-Amandsberg | 581.56 mi (935.93 km) |
| Castlebar to Sint-Andries | 555.04 mi (893.25 km) |
| Castlebar to Sint-Genesius-Rode | 614.19 mi (988.44 km) |
