| Swansea to Morris (Illinois) | 211.80 mi (340.85 km) |
| Swansea to Morristown (New Jersey) | 838.06 mi (1,348.72 km) |
| Swansea to Morristown (Tennessee) | 401.15 mi (645.59 km) |
| Swansea to Morrisville (North Carolina) | 641.26 mi (1,032.01 km) |
| Swansea to Morro Bay (California) | 1,709.93 mi (2,751.87 km) |
| Swansea to Morton (Illinois) | 145.18 mi (233.64 km) |
| Swansea to Morton Grove (Illinois) | 267.56 mi (430.59 km) |
| Swansea to Moscow (Idaho) | 1,475.44 mi (2,374.50 km) |
| Swansea to Moses Lake (Washington) | 1,586.24 mi (2,552.81 km) |
| Swansea to Moss Bluff (Louisiana) | 598.49 mi (963.18 km) |
| Swansea to Moss Point (Mississippi) | 567.57 mi (913.41 km) |
| Swansea to Moultrie (Georgia) | 620.11 mi (997.97 km) |
| Swansea to Mounds View (Minnesota) | 482.31 mi (776.20 km) |
| Swansea to Mount Airy (North Carolina) | 532.20 mi (856.49 km) |
| Swansea to Mount Clemens (Michigan) | 465.74 mi (749.53 km) |
