| Merthyr Tudful to Yuncos | 805.94 mi (1,297.04 km) |
| Merthyr Tudful to Zafra | 932.40 mi (1,500.56 km) |
| Merthyr Tudful to Zamora | 716.33 mi (1,152.82 km) |
| Merthyr Tudful to Zaragoza | 707.20 mi (1,138.12 km) |
| Merthyr Tudful to Zarautz | 587.21 mi (945.03 km) |
| Merthyr Tudful to Zuera | 693.00 mi (1,115.28 km) |
| Merthyr Tudful to Zumaia | 585.87 mi (942.86 km) |
| Merthyr Tudful to Zumarraga | 600.38 mi (966.21 km) |
| Merthyr Tudful to Longyearbyen | 1,889.48 mi (3,040.83 km) |
| Merthyr Tudful to Ahus | 773.07 mi (1,244.14 km) |
| Merthyr Tudful to Akersberga | 993.86 mi (1,599.46 km) |
| Merthyr Tudful to Alingsas | 761.00 mi (1,224.72 km) |
| Merthyr Tudful to Almhult | 779.72 mi (1,254.84 km) |
| Merthyr Tudful to Alta | 983.86 mi (1,583.37 km) |
| Merthyr Tudful to Amal | 804.47 mi (1,294.67 km) |
