| Merthyr Tudful to Muro del Alcoy | 906.84 mi (1,459.41 km) |
| Merthyr Tudful to Naron | 607.77 mi (978.11 km) |
| Merthyr Tudful to Navalcarnero | 792.27 mi (1,275.04 km) |
| Merthyr Tudful to Navalmoral de la Mata | 824.89 mi (1,327.53 km) |
| Merthyr Tudful to Nerja | 1,036.42 mi (1,667.96 km) |
| Merthyr Tudful to Nigran | 710.57 mi (1,143.55 km) |
| Merthyr Tudful to Nijar | 1,022.57 mi (1,645.66 km) |
| Merthyr Tudful to Novelda | 931.54 mi (1,499.16 km) |
| Merthyr Tudful to Noya | 670.24 mi (1,078.65 km) |
| Merthyr Tudful to Nules | 835.92 mi (1,345.28 km) |
| Merthyr Tudful to Ocana | 814.36 mi (1,310.59 km) |
| Merthyr Tudful to Ogijares | 1,010.64 mi (1,626.46 km) |
| Merthyr Tudful to Oleiros | 624.69 mi (1,005.34 km) |
| Merthyr Tudful to Olesa de Montserrat | 747.18 mi (1,202.47 km) |
| Merthyr Tudful to Oliva | 899.80 mi (1,448.09 km) |
