| Castro Valley to Manerbio | 5,973.06 mi (9,612.72 km) |
| Castro Valley to Manfredonia | 6,348.76 mi (10,217.33 km) |
| Castro Valley to Maniago | 5,999.43 mi (9,655.15 km) |
| Castro Valley to Mantova | 6,003.54 mi (9,661.77 km) |
| Castro Valley to Maranello | 6,040.75 mi (9,721.65 km) |
| Castro Valley to Marano di Napoli | 6,342.95 mi (10,207.99 km) |
| Castro Valley to Marano Vicentino | 5,990.88 mi (9,641.39 km) |
| Castro Valley to Marcianise | 6,338.57 mi (10,200.94 km) |
| Castro Valley to Marcon | 6,023.03 mi (9,693.13 km) |
| Castro Valley to Mareno di Piave | 6,008.14 mi (9,669.17 km) |
| Castro Valley to Margherita di Savoia | 6,370.77 mi (10,252.77 km) |
| Castro Valley to Mariano Comense | 5,927.29 mi (9,539.05 km) |
| Castro Valley to Marigliano | 6,348.62 mi (10,217.12 km) |
| Castro Valley to Marino | 6,249.48 mi (10,057.56 km) |
| Castro Valley to Marostica | 5,994.45 mi (9,647.13 km) |
