| Risca to Morristown (New Jersey) | 3,353.41 mi (5,396.79 km) |
| Risca to Morristown (Tennessee) | 3,921.63 mi (6,311.25 km) |
| Risca to Morrisville (North Carolina) | 3,755.04 mi (6,043.15 km) |
| Risca to Morro Bay (California) | 5,349.14 mi (8,608.60 km) |
| Risca to Morton (Illinois) | 3,960.16 mi (6,373.26 km) |
| Risca to Morton Grove (Illinois) | 3,829.42 mi (6,162.86 km) |
| Risca to Moscow (Idaho) | 4,597.11 mi (7,398.33 km) |
| Risca to Moses Lake (Washington) | 4,641.15 mi (7,469.21 km) |
| Risca to Moss Bluff (Louisiana) | 4,613.39 mi (7,424.53 km) |
| Risca to Moss Point (Mississippi) | 4,417.00 mi (7,108.48 km) |
| Risca to Moultrie (Georgia) | 4,183.85 mi (6,733.26 km) |
| Risca to Mounds View (Minnesota) | 3,892.26 mi (6,263.99 km) |
| Risca to Mount Airy (North Carolina) | 3,797.44 mi (6,111.38 km) |
| Risca to Mount Clemens (Michigan) | 3,613.59 mi (5,815.51 km) |
| Risca to Mount Dora (Florida) | 4,210.02 mi (6,775.38 km) |
