| Santurce-Antiguo to Massarosa | 669.02 mi (1,076.68 km) |
| Santurce-Antiguo to Matelica | 805.47 mi (1,296.28 km) |
| Santurce-Antiguo to Matera | 1,022.19 mi (1,645.06 km) |
| Santurce-Antiguo to Matino | 1,112.45 mi (1,790.31 km) |
| Santurce-Antiguo to Mazzarino | 996.34 mi (1,603.46 km) |
| Santurce-Antiguo to Meda | 621.75 mi (1,000.61 km) |
| Santurce-Antiguo to Medesano | 660.43 mi (1,062.86 km) |
| Santurce-Antiguo to Medicina | 733.33 mi (1,180.19 km) |
| Santurce-Antiguo to Meldola | 753.93 mi (1,213.33 km) |
| Santurce-Antiguo to Melegnano | 625.69 mi (1,006.96 km) |
| Santurce-Antiguo to Melendugno | 1,117.40 mi (1,798.28 km) |
| Santurce-Antiguo to Melfi | 968.06 mi (1,557.95 km) |
| Santurce-Antiguo to Melilli | 1,044.09 mi (1,680.30 km) |
| Santurce-Antiguo to Melito di Napoli | 898.63 mi (1,446.20 km) |
| Santurce-Antiguo to Melito di Porto Salvo | 1,052.33 mi (1,693.56 km) |
