| Upper Grand Lagoon to Massarosa | 5,085.41 mi (8,184.17 km) |
| Upper Grand Lagoon to Matelica | 5,223.84 mi (8,406.96 km) |
| Upper Grand Lagoon to Matera | 5,472.36 mi (8,806.92 km) |
| Upper Grand Lagoon to Matino | 5,564.09 mi (8,954.54 km) |
| Upper Grand Lagoon to Mazzarino | 5,478.48 mi (8,816.76 km) |
| Upper Grand Lagoon to Meda | 4,979.85 mi (8,014.29 km) |
| Upper Grand Lagoon to Medesano | 5,049.62 mi (8,126.58 km) |
| Upper Grand Lagoon to Medicina | 5,123.87 mi (8,246.07 km) |
| Upper Grand Lagoon to Meldola | 5,153.24 mi (8,293.33 km) |
| Upper Grand Lagoon to Melegnano | 4,995.79 mi (8,039.95 km) |
| Upper Grand Lagoon to Melendugno | 5,564.60 mi (8,955.35 km) |
| Upper Grand Lagoon to Melfi | 5,417.88 mi (8,719.23 km) |
| Upper Grand Lagoon to Melilli | 5,526.12 mi (8,893.44 km) |
| Upper Grand Lagoon to Melito di Napoli | 5,356.52 mi (8,620.48 km) |
| Upper Grand Lagoon to Melito di Porto Salvo | 5,531.81 mi (8,902.58 km) |
