| Castro Valley to Massarosa | 6,062.81 mi (9,757.15 km) |
| Castro Valley to Matelica | 6,174.01 mi (9,936.10 km) |
| Castro Valley to Matera | 6,424.25 mi (10,338.83 km) |
| Castro Valley to Matino | 6,503.37 mi (10,466.16 km) |
| Castro Valley to Mazzarino | 6,551.50 mi (10,543.62 km) |
| Castro Valley to Meda | 5,928.66 mi (9,541.25 km) |
| Castro Valley to Medesano | 6,007.56 mi (9,668.23 km) |
| Castro Valley to Medicina | 6,065.34 mi (9,761.22 km) |
| Castro Valley to Meldola | 6,096.95 mi (9,812.10 km) |
| Castro Valley to Melegnano | 5,950.28 mi (9,576.04 km) |
| Castro Valley to Melendugno | 6,494.82 mi (10,452.40 km) |
| Castro Valley to Melfi | 6,378.47 mi (10,265.16 km) |
| Castro Valley to Melilli | 6,585.72 mi (10,598.69 km) |
| Castro Valley to Melito di Napoli | 6,343.41 mi (10,208.73 km) |
| Castro Valley to Melito di Porto Salvo | 6,562.54 mi (10,561.40 km) |
