| Porthcawl to Morristown (New Jersey) | 3,331.28 mi (5,361.18 km) |
| Porthcawl to Morristown (Tennessee) | 3,899.85 mi (6,276.21 km) |
| Porthcawl to Morrisville (North Carolina) | 3,732.36 mi (6,006.66 km) |
| Porthcawl to Morro Bay (California) | 5,335.98 mi (8,587.43 km) |
| Porthcawl to Morton (Illinois) | 3,940.79 mi (6,342.09 km) |
| Porthcawl to Morton Grove (Illinois) | 3,810.15 mi (6,131.84 km) |
| Porthcawl to Moscow (Idaho) | 4,585.92 mi (7,380.32 km) |
| Porthcawl to Moses Lake (Washington) | 4,630.66 mi (7,452.33 km) |
| Porthcawl to Moss Bluff (Louisiana) | 4,592.18 mi (7,390.40 km) |
| Porthcawl to Moss Point (Mississippi) | 4,394.89 mi (7,072.89 km) |
| Porthcawl to Moultrie (Georgia) | 4,161.01 mi (6,696.49 km) |
| Porthcawl to Mounds View (Minnesota) | 3,875.07 mi (6,236.33 km) |
| Porthcawl to Mount Airy (North Carolina) | 3,775.24 mi (6,075.67 km) |
| Porthcawl to Mount Clemens (Michigan) | 3,593.54 mi (5,783.24 km) |
| Porthcawl to Mount Dora (Florida) | 4,186.34 mi (6,737.27 km) |
