| Difficult Run to Marly-le-Roi | 3,832.81 mi (6,168.32 km) |
| Difficult Run to Marmande | 3,864.50 mi (6,219.31 km) |
| Difficult Run to Maromme | 3,773.11 mi (6,072.23 km) |
| Difficult Run to Marquette-les-Lille | 3,827.38 mi (6,159.57 km) |
| Difficult Run to Marseille | 4,134.36 mi (6,653.60 km) |
| Difficult Run to Martigues | 4,116.50 mi (6,624.87 km) |
| Difficult Run to Massy | 3,843.79 mi (6,185.99 km) |
| Difficult Run to Maubeuge | 3,874.60 mi (6,235.57 km) |
| Difficult Run to Mauguio | 4,063.31 mi (6,539.26 km) |
| Difficult Run to Mauleon | 3,759.75 mi (6,050.73 km) |
| Difficult Run to Maurepas | 3,829.20 mi (6,162.51 km) |
| Difficult Run to Maxeville | 4,007.48 mi (6,449.41 km) |
| Difficult Run to Mayenne | 3,731.48 mi (6,005.24 km) |
| Difficult Run to Mazamet | 3,993.20 mi (6,426.43 km) |
| Difficult Run to Meaux | 3,863.83 mi (6,218.24 km) |
