| Houston to Montevarchi | 5,587.91 mi (8,992.88 km) |
| Houston to Monticello Conte Otto | 5,511.28 mi (8,869.55 km) |
| Houston to Montichiari | 5,469.17 mi (8,801.78 km) |
| Houston to Montignoso | 5,510.72 mi (8,868.64 km) |
| Houston to Montopoli in Val d'Arno | 5,548.18 mi (8,928.94 km) |
| Houston to Monza | 5,416.92 mi (8,717.68 km) |
| Houston to Morbegno | 5,409.41 mi (8,705.60 km) |
| Houston to Mori | 5,477.59 mi (8,815.33 km) |
| Houston to Morlupo | 5,679.90 mi (9,140.91 km) |
| Houston to Morrovalle | 5,680.30 mi (9,141.56 km) |
| Houston to Mortara | 5,406.94 mi (8,701.63 km) |
| Houston to Mosciano Sant'Angelo | 5,714.84 mi (9,197.14 km) |
| Houston to Motta di Livenza | 5,546.15 mi (8,925.66 km) |
| Houston to Motta Sant'Anastasia | 5,969.20 mi (9,606.49 km) |
| Houston to Mottola | 5,932.00 mi (9,546.63 km) |
