| Castro Valley to Montigny-les-Metz | 5,654.82 mi (9,100.56 km) |
| Castro Valley to Montivilliers | 5,455.57 mi (8,779.89 km) |
| Castro Valley to Montlouis-sur-Loire | 5,585.09 mi (8,988.33 km) |
| Castro Valley to Montlucon | 5,694.93 mi (9,165.10 km) |
| Castro Valley to Montmagny | 5,550.24 mi (8,932.24 km) |
| Castro Valley to Montmorency | 5,548.67 mi (8,929.71 km) |
| Castro Valley to Montpellier | 5,878.71 mi (9,460.88 km) |
| Castro Valley to Montreuil | 5,559.00 mi (8,946.35 km) |
| Castro Valley to Montrouge | 5,557.62 mi (8,944.12 km) |
| Castro Valley to Morangis | 5,563.74 mi (8,953.97 km) |
| Castro Valley to Morieres-les-Avignon | 5,893.91 mi (9,485.34 km) |
| Castro Valley to Morlaix | 5,376.68 mi (8,652.92 km) |
| Castro Valley to Morsang-sur-Orge | 5,566.39 mi (8,958.25 km) |
| Castro Valley to Mouans-Sartoux | 5,975.71 mi (9,616.98 km) |
| Castro Valley to Mougins | 5,977.50 mi (9,619.86 km) |
