| Merthyr Tudful to Wixom (Michigan) | 3,627.40 mi (5,837.74 km) |
| Merthyr Tudful to Woburn (Massachusetts) | 3,131.74 mi (5,040.04 km) |
| Merthyr Tudful to Wolf Trap (Virginia) | 3,535.40 mi (5,689.68 km) |
| Merthyr Tudful to Wood Dale (Illinois) | 3,825.12 mi (6,155.93 km) |
| Merthyr Tudful to Wood River (Illinois) | 4,051.38 mi (6,520.07 km) |
| Merthyr Tudful to Woodbridge (Virginia) | 3,547.67 mi (5,709.42 km) |
| Merthyr Tudful to Woodburn (Oregon) | 4,837.68 mi (7,785.50 km) |
| Merthyr Tudful to Woodburn (Virginia) | 3,537.25 mi (5,692.65 km) |
| Merthyr Tudful to Woodbury (Minnesota) | 3,875.79 mi (6,237.48 km) |
| Merthyr Tudful to Woodbury (New York) | 3,300.84 mi (5,312.19 km) |
| Merthyr Tudful to Woodcrest (California) | 5,304.89 mi (8,537.40 km) |
| Merthyr Tudful to Woodhaven (Michigan) | 3,633.09 mi (5,846.90 km) |
| Merthyr Tudful to Woodinville (Washington) | 4,671.14 mi (7,517.47 km) |
| Merthyr Tudful to Woodland (California) | 5,173.32 mi (8,325.66 km) |
| Merthyr Tudful to Woodlawn (Maryland) | 3,497.17 mi (5,628.15 km) |
