| Houston to Manerbio | 5,460.29 mi (8,787.49 km) |
| Houston to Manfredonia | 5,844.35 mi (9,405.58 km) |
| Houston to Maniago | 5,535.88 mi (8,909.14 km) |
| Houston to Mantova | 5,495.13 mi (8,843.56 km) |
| Houston to Maranello | 5,521.16 mi (8,885.45 km) |
| Houston to Marano di Napoli | 5,799.97 mi (9,334.15 km) |
| Houston to Marano Vicentino | 5,501.46 mi (8,853.75 km) |
| Houston to Marcianise | 5,799.73 mi (9,333.77 km) |
| Houston to Marcon | 5,542.13 mi (8,919.19 km) |
| Houston to Mareno di Piave | 5,533.48 mi (8,905.28 km) |
| Houston to Margherita di Savoia | 5,864.92 mi (9,438.67 km) |
| Houston to Mariano Comense | 5,409.04 mi (8,705.00 km) |
| Houston to Marigliano | 5,810.10 mi (9,350.45 km) |
| Houston to Marino | 5,701.24 mi (9,175.26 km) |
| Houston to Marostica | 5,508.81 mi (8,865.57 km) |
