| Penafiel to Melzo | 935.16 mi (1,504.99 km) |
| Penafiel to Mendicino | 1,293.81 mi (2,082.18 km) |
| Penafiel to Menfi | 1,158.37 mi (1,864.21 km) |
| Penafiel to Mentana | 1,080.18 mi (1,738.38 km) |
| Penafiel to Merano | 1,035.04 mi (1,665.73 km) |
| Penafiel to Merate | 938.96 mi (1,511.11 km) |
| Penafiel to Mercato San Severino | 1,198.91 mi (1,929.47 km) |
| Penafiel to Mercogliano | 1,196.21 mi (1,925.11 km) |
| Penafiel to Mesagne | 1,358.10 mi (2,185.65 km) |
| Penafiel to Messina | 1,280.07 mi (2,060.08 km) |
| Penafiel to Mestre | 1,069.41 mi (1,721.05 km) |
| Penafiel to Mestrino | 1,046.41 mi (1,684.04 km) |
| Penafiel to Milan | 923.94 mi (1,486.94 km) |
| Penafiel to Milazzo | 1,263.12 mi (2,032.80 km) |
| Penafiel to Minerbio | 1,024.37 mi (1,648.56 km) |
