| Castlebar to Sprimont | 673.65 mi (1,084.14 km) |
| Castlebar to Stabroek | 598.42 mi (963.07 km) |
| Castlebar to Staden | 554.98 mi (893.16 km) |
| Castlebar to Steenokkerzeel | 615.46 mi (990.49 km) |
| Castlebar to Stekene | 588.71 mi (947.44 km) |
| Castlebar to Strombeek-Bever | 609.45 mi (980.82 km) |
| Castlebar to Temse | 597.64 mi (961.80 km) |
| Castlebar to Ternat | 604.14 mi (972.27 km) |
| Castlebar to Tervuren | 618.11 mi (994.75 km) |
| Castlebar to Tessenderlo | 634.34 mi (1,020.86 km) |
| Castlebar to Theux | 678.41 mi (1,091.79 km) |
| Castlebar to Thuin | 624.63 mi (1,005.25 km) |
| Castlebar to Tielt | 566.47 mi (911.65 km) |
| Castlebar to Tienen | 635.73 mi (1,023.11 km) |
| Castlebar to Tongeren | 657.34 mi (1,057.89 km) |
