| Caerfyrddin to Melzo | 763.12 mi (1,228.12 km) |
| Caerfyrddin to Mendicino | 1,311.44 mi (2,110.56 km) |
| Caerfyrddin to Menfi | 1,292.88 mi (2,080.70 km) |
| Caerfyrddin to Mentana | 1,045.63 mi (1,682.78 km) |
| Caerfyrddin to Merano | 782.26 mi (1,258.93 km) |
| Caerfyrddin to Merate | 754.92 mi (1,214.92 km) |
| Caerfyrddin to Mercato San Severino | 1,182.95 mi (1,903.78 km) |
| Caerfyrddin to Mercogliano | 1,175.08 mi (1,891.11 km) |
| Caerfyrddin to Mesagne | 1,305.32 mi (2,100.71 km) |
| Caerfyrddin to Messina | 1,345.38 mi (2,165.18 km) |
| Caerfyrddin to Mestre | 871.09 mi (1,401.88 km) |
| Caerfyrddin to Mestrino | 854.43 mi (1,375.07 km) |
| Caerfyrddin to Milan | 756.22 mi (1,217.02 km) |
| Caerfyrddin to Milazzo | 1,333.31 mi (2,145.76 km) |
| Caerfyrddin to Minerbio | 879.09 mi (1,414.76 km) |
