| Middle River to Montevarchi | 4,342.88 mi (6,989.19 km) |
| Middle River to Monticello Conte Otto | 4,273.53 mi (6,877.59 km) |
| Middle River to Montichiari | 4,228.89 mi (6,805.73 km) |
| Middle River to Montignoso | 4,265.31 mi (6,864.36 km) |
| Middle River to Montopoli in Val d'Arno | 4,302.46 mi (6,924.14 km) |
| Middle River to Monza | 4,175.61 mi (6,720.00 km) |
| Middle River to Morbegno | 4,170.60 mi (6,711.92 km) |
| Middle River to Mori | 4,239.86 mi (6,823.39 km) |
| Middle River to Morlupo | 4,431.99 mi (7,132.60 km) |
| Middle River to Morrovalle | 4,437.52 mi (7,141.50 km) |
| Middle River to Mortara | 4,163.73 mi (6,700.87 km) |
| Middle River to Mosciano Sant'Angelo | 4,470.68 mi (7,194.86 km) |
| Middle River to Motta di Livenza | 4,310.79 mi (6,937.55 km) |
| Middle River to Motta Sant'Anastasia | 4,713.60 mi (7,585.80 km) |
| Middle River to Mottola | 4,686.22 mi (7,541.74 km) |
