| South Houston to Montevarchi | 5,587.31 mi (8,991.90 km) |
| South Houston to Monticello Conte Otto | 5,511.08 mi (8,869.22 km) |
| South Houston to Montichiari | 5,468.83 mi (8,801.23 km) |
| South Houston to Montignoso | 5,510.08 mi (8,867.62 km) |
| South Houston to Montopoli in Val d'Arno | 5,547.53 mi (8,927.89 km) |
| South Houston to Monza | 5,416.51 mi (8,717.03 km) |
| South Houston to Morbegno | 5,409.14 mi (8,705.16 km) |
| South Houston to Mori | 5,477.38 mi (8,814.99 km) |
| South Houston to Morlupo | 5,679.11 mi (9,139.65 km) |
| South Houston to Morrovalle | 5,679.84 mi (9,140.82 km) |
| South Houston to Mortara | 5,406.43 mi (8,700.81 km) |
| South Houston to Mosciano Sant'Angelo | 5,714.30 mi (9,196.27 km) |
| South Houston to Motta di Livenza | 5,546.07 mi (8,925.53 km) |
| South Houston to Motta Sant'Anastasia | 5,967.79 mi (9,604.22 km) |
| South Houston to Mottola | 5,931.38 mi (9,545.63 km) |
