| Merthyr Tudful to Nocatee (Florida) | 4,123.54 mi (6,636.20 km) |
| Merthyr Tudful to Nogales (Arizona) | 5,221.37 mi (8,402.98 km) |
| Merthyr Tudful to Nolensville (Tennessee) | 4,055.37 mi (6,526.48 km) |
| Merthyr Tudful to Norco (California) | 5,308.32 mi (8,542.92 km) |
| Merthyr Tudful to Norcross (Georgia) | 4,052.27 mi (6,521.50 km) |
| Merthyr Tudful to Norfolk (Nebraska) | 4,176.03 mi (6,720.68 km) |
| Merthyr Tudful to Norfolk (Virginia) | 3,585.23 mi (5,769.87 km) |
| Merthyr Tudful to Normal (Illinois) | 3,930.83 mi (6,326.06 km) |
| Merthyr Tudful to Norman (Oklahoma) | 4,511.19 mi (7,260.06 km) |
| Merthyr Tudful to Norridge (Illinois) | 3,819.19 mi (6,146.39 km) |
| Merthyr Tudful to Norristown (Pennsylvania) | 3,403.47 mi (5,477.35 km) |
| Merthyr Tudful to North Adams (Massachusetts) | 3,203.92 mi (5,156.21 km) |
| Merthyr Tudful to North Amityville (New York) | 3,299.29 mi (5,309.69 km) |
| Merthyr Tudful to North Arlington (New Jersey) | 3,324.99 mi (5,351.06 km) |
| Merthyr Tudful to North Auburn (California) | 5,138.17 mi (8,269.08 km) |
