| Porthcawl to Mechernich | 452.92 mi (728.91 km) |
| Porthcawl to Meckenbeuren | 647.29 mi (1,041.71 km) |
| Porthcawl to Meckenheim | 468.21 mi (753.52 km) |
| Porthcawl to Meerane | 699.79 mi (1,126.20 km) |
| Porthcawl to Meerbusch | 446.57 mi (718.68 km) |
| Porthcawl to Meine | 608.16 mi (978.74 km) |
| Porthcawl to Meinerzhagen | 489.34 mi (787.52 km) |
| Porthcawl to Meiningen | 615.57 mi (990.67 km) |
| Porthcawl to Meissen | 740.13 mi (1,191.12 km) |
| Porthcawl to Meitingen | 674.97 mi (1,086.26 km) |
| Porthcawl to Melle | 515.32 mi (829.33 km) |
| Porthcawl to Melsungen | 571.61 mi (919.91 km) |
| Porthcawl to Memmelsdorf | 648.46 mi (1,043.59 km) |
| Porthcawl to Memmingen | 663.50 mi (1,067.80 km) |
| Porthcawl to Mendig | 483.37 mi (777.91 km) |
