| Merthyr Tudful to Woodlawn (Virginia) | 3,537.66 mi (5,693.31 km) |
| Merthyr Tudful to Woodlyn (Pennsylvania) | 3,414.34 mi (5,494.85 km) |
| Merthyr Tudful to Woodmere (Louisiana) | 4,494.76 mi (7,233.62 km) |
| Merthyr Tudful to Woodmere (New York) | 3,314.74 mi (5,334.56 km) |
| Merthyr Tudful to Woodridge (Illinois) | 3,837.96 mi (6,176.61 km) |
| Merthyr Tudful to Woods Cross (Utah) | 4,739.34 mi (7,627.24 km) |
| Merthyr Tudful to Woodstock (Georgia) | 4,056.73 mi (6,528.68 km) |
| Merthyr Tudful to Woodstock (Illinois) | 3,826.89 mi (6,158.78 km) |
| Merthyr Tudful to Woodward (Oklahoma) | 4,528.93 mi (7,288.61 km) |
| Merthyr Tudful to Woonsocket (Rhode Island) | 3,165.90 mi (5,095.02 km) |
| Merthyr Tudful to Wooster (Ohio) | 3,639.92 mi (5,857.88 km) |
| Merthyr Tudful to Worcester (Massachusetts) | 3,167.45 mi (5,097.52 km) |
| Merthyr Tudful to World Golf Village (Florida) | 4,133.17 mi (6,651.70 km) |
| Merthyr Tudful to Worth (Illinois) | 3,830.61 mi (6,164.77 km) |
| Merthyr Tudful to Worthington (Minnesota) | 4,033.00 mi (6,490.48 km) |
