| Rio Maior to Montevarchi | 1,097.80 mi (1,766.74 km) |
| Rio Maior to Monticello Conte Otto | 1,127.73 mi (1,814.90 km) |
| Rio Maior to Montichiari | 1,068.75 mi (1,719.98 km) |
| Rio Maior to Montignoso | 1,034.65 mi (1,665.11 km) |
| Rio Maior to Montopoli in Val d'Arno | 1,058.76 mi (1,703.91 km) |
| Rio Maior to Monza | 1,020.56 mi (1,642.43 km) |
| Rio Maior to Morbegno | 1,046.43 mi (1,684.07 km) |
| Rio Maior to Mori | 1,104.72 mi (1,777.87 km) |
| Rio Maior to Morlupo | 1,135.86 mi (1,828.00 km) |
| Rio Maior to Morrovalle | 1,196.33 mi (1,925.31 km) |
| Rio Maior to Mortara | 989.19 mi (1,591.95 km) |
| Rio Maior to Mosciano Sant'Angelo | 1,208.32 mi (1,944.60 km) |
| Rio Maior to Motta di Livenza | 1,178.74 mi (1,897.00 km) |
| Rio Maior to Motta Sant'Anastasia | 1,296.22 mi (2,086.07 km) |
| Rio Maior to Mottola | 1,372.65 mi (2,209.06 km) |
