| Merthyr Tudful to New Britain (Connecticut) | 3,232.31 mi (5,201.90 km) |
| Merthyr Tudful to New Brunswick (New Jersey) | 3,350.94 mi (5,392.82 km) |
| Merthyr Tudful to New Carrollton (Maryland) | 3,517.54 mi (5,660.93 km) |
| Merthyr Tudful to New Cassel (New York) | 3,303.04 mi (5,315.72 km) |
| Merthyr Tudful to New Castle (Indiana) | 3,817.13 mi (6,143.08 km) |
| Merthyr Tudful to New Castle (Pennsylvania) | 3,568.47 mi (5,742.89 km) |
| Merthyr Tudful to New City (New York) | 3,303.76 mi (5,316.89 km) |
| Merthyr Tudful to New Franklin (Ohio) | 3,619.92 mi (5,825.70 km) |
| Merthyr Tudful to New Haven (Connecticut) | 3,253.32 mi (5,235.70 km) |
| Merthyr Tudful to New Haven (Indiana) | 3,750.79 mi (6,036.31 km) |
| Merthyr Tudful to New Hope (Minnesota) | 3,886.62 mi (6,254.91 km) |
| Merthyr Tudful to New Hyde Park (New York) | 3,309.20 mi (5,325.65 km) |
| Merthyr Tudful to New Iberia (Louisiana) | 4,557.91 mi (7,335.24 km) |
| Merthyr Tudful to New Kensington (Pennsylvania) | 3,563.36 mi (5,734.67 km) |
| Merthyr Tudful to New Kingman-Butler (Arizona) | 5,114.60 mi (8,231.16 km) |
