| Porthcawl to Monticello (Minnesota) | 3,887.90 mi (6,256.97 km) |
| Porthcawl to Montrose (Colorado) | 4,729.24 mi (7,610.98 km) |
| Porthcawl to Moody (Alabama) | 4,155.14 mi (6,687.05 km) |
| Porthcawl to Moore (Oklahoma) | 4,507.33 mi (7,253.85 km) |
| Porthcawl to Moorestown-Lenola (New Jersey) | 3,386.97 mi (5,450.80 km) |
| Porthcawl to Mooresville (North Carolina) | 3,826.85 mi (6,158.72 km) |
| Porthcawl to Moorhead (Minnesota) | 3,921.17 mi (6,310.52 km) |
| Porthcawl to Moorpark (California) | 5,333.16 mi (8,582.90 km) |
| Porthcawl to Moraga (California) | 5,235.07 mi (8,425.04 km) |
| Porthcawl to Moreno Valley (California) | 5,297.75 mi (8,525.91 km) |
| Porthcawl to Morgan City (Louisiana) | 4,540.50 mi (7,307.23 km) |
| Porthcawl to Morgan Hill (California) | 5,260.69 mi (8,466.27 km) |
| Porthcawl to Morganton (North Carolina) | 3,855.71 mi (6,205.16 km) |
| Porthcawl to Morgantown (West Virginia) | 3,605.90 mi (5,803.14 km) |
| Porthcawl to Morris (Illinois) | 3,865.43 mi (6,220.81 km) |
