| Risca to Mendota Heights (Minnesota) | 3,900.18 mi (6,276.74 km) |
| Risca to Menifee (California) | 5,324.75 mi (8,569.36 km) |
| Risca to Menlo Park (California) | 5,270.13 mi (8,481.46 km) |
| Risca to Menomonee Falls (Wisconsin) | 3,791.97 mi (6,102.59 km) |
| Risca to Menomonie (Wisconsin) | 3,854.73 mi (6,203.58 km) |
| Risca to Mentor (Ohio) | 3,592.33 mi (5,781.29 km) |
| Risca to Mequon (Wisconsin) | 3,782.78 mi (6,087.79 km) |
| Risca to Merced (California) | 5,227.12 mi (8,412.23 km) |
| Risca to Mercedes (Texas) | 5,017.95 mi (8,075.61 km) |
| Risca to Mercer Island (Washington) | 4,699.15 mi (7,562.55 km) |
| Risca to Mercerville (New Jersey) | 3,386.33 mi (5,449.77 km) |
| Risca to Meriden (Connecticut) | 3,252.91 mi (5,235.05 km) |
| Risca to Meridian (Idaho) | 4,748.97 mi (7,642.73 km) |
| Risca to Meridian (Mississippi) | 4,325.95 mi (6,961.94 km) |
| Risca to Merriam (Kansas) | 4,236.63 mi (6,818.20 km) |
