| Upper Grand Lagoon to Montevarchi | 5,151.09 mi (8,289.88 km) |
| Upper Grand Lagoon to Monticello Conte Otto | 5,086.89 mi (8,186.56 km) |
| Upper Grand Lagoon to Montichiari | 5,040.80 mi (8,112.38 km) |
| Upper Grand Lagoon to Montignoso | 5,073.39 mi (8,164.83 km) |
| Upper Grand Lagoon to Montopoli in Val d'Arno | 5,110.18 mi (8,224.04 km) |
| Upper Grand Lagoon to Monza | 4,986.96 mi (8,025.74 km) |
| Upper Grand Lagoon to Morbegno | 4,983.53 mi (8,020.22 km) |
| Upper Grand Lagoon to Mori | 5,053.29 mi (8,132.48 km) |
| Upper Grand Lagoon to Morlupo | 5,237.41 mi (8,428.79 km) |
| Upper Grand Lagoon to Morrovalle | 5,247.29 mi (8,444.69 km) |
| Upper Grand Lagoon to Mortara | 4,973.75 mi (8,004.48 km) |
| Upper Grand Lagoon to Mosciano Sant'Angelo | 5,279.32 mi (8,496.25 km) |
| Upper Grand Lagoon to Motta di Livenza | 5,125.38 mi (8,248.49 km) |
| Upper Grand Lagoon to Motta Sant'Anastasia | 5,507.95 mi (8,864.19 km) |
| Upper Grand Lagoon to Mottola | 5,493.05 mi (8,840.21 km) |
