| Merthyr Tudful to Trim | 190.10 mi (305.93 km) |
| Merthyr Tudful to Tuam | 260.04 mi (418.49 km) |
| Merthyr Tudful to Tullamore | 202.77 mi (326.33 km) |
| Merthyr Tudful to Waterford | 163.45 mi (263.05 km) |
| Merthyr Tudful to Wexford | 137.10 mi (220.64 km) |
| Merthyr Tudful to Wicklow | 140.80 mi (226.60 km) |
| Merthyr Tudful to Abano Terme | 819.60 mi (1,319.02 km) |
| Merthyr Tudful to Abbiategrasso | 711.17 mi (1,144.52 km) |
| Merthyr Tudful to Acate | 1,338.59 mi (2,154.26 km) |
| Merthyr Tudful to Acerra | 1,122.61 mi (1,806.67 km) |
| Merthyr Tudful to Aci Castello | 1,330.30 mi (2,140.91 km) |
| Merthyr Tudful to Aci Catena | 1,327.43 mi (2,136.29 km) |
| Merthyr Tudful to Aci Sant'Antonio | 1,326.88 mi (2,135.41 km) |
| Merthyr Tudful to Acireale | 1,327.60 mi (2,136.56 km) |
| Merthyr Tudful to Acquaviva delle Fonti | 1,214.86 mi (1,955.13 km) |
