| Thornton Heath to Melzo | 596.39 mi (959.80 km) |
| Thornton Heath to Mendicino | 1,148.32 mi (1,848.05 km) |
| Thornton Heath to Menfi | 1,146.59 mi (1,845.26 km) |
| Thornton Heath to Mentana | 883.94 mi (1,422.57 km) |
| Thornton Heath to Merano | 605.09 mi (973.80 km) |
| Thornton Heath to Merate | 587.00 mi (944.68 km) |
| Thornton Heath to Mercato San Severino | 1,019.07 mi (1,640.03 km) |
| Thornton Heath to Mercogliano | 1,010.79 mi (1,626.70 km) |
| Thornton Heath to Mesagne | 1,134.52 mi (1,825.83 km) |
| Thornton Heath to Messina | 1,187.50 mi (1,911.10 km) |
| Thornton Heath to Mestre | 696.33 mi (1,120.63 km) |
| Thornton Heath to Mestrino | 680.89 mi (1,095.78 km) |
| Thornton Heath to Milan | 590.56 mi (950.42 km) |
| Thornton Heath to Milazzo | 1,176.41 mi (1,893.25 km) |
| Thornton Heath to Minerbio | 709.96 mi (1,142.58 km) |
