| Holyhead to Miami Lakes (Florida) | 4,221.68 mi (6,794.14 km) |
| Holyhead to Miami Shores (Florida) | 4,218.14 mi (6,788.44 km) |
| Holyhead to Miami Springs (Florida) | 4,225.19 mi (6,799.78 km) |
| Holyhead to Miamisburg (Ohio) | 3,699.38 mi (5,953.58 km) |
| Holyhead to Michigan City (Indiana) | 3,701.61 mi (5,957.17 km) |
| Holyhead to Middle Island (New York) | 3,194.01 mi (5,140.27 km) |
| Holyhead to Middle River (Maryland) | 3,402.93 mi (5,476.48 km) |
| Holyhead to Middle Valley (Tennessee) | 3,950.06 mi (6,357.00 km) |
| Holyhead to Middleburg (Florida) | 4,074.25 mi (6,556.88 km) |
| Holyhead to Middleburg Heights (Ohio) | 3,523.12 mi (5,669.91 km) |
| Holyhead to Middlesex (New Jersey) | 3,270.23 mi (5,262.92 km) |
| Holyhead to Middleton (Wisconsin) | 3,735.15 mi (6,011.14 km) |
| Holyhead to Middletown (Connecticut) | 3,153.29 mi (5,074.72 km) |
| Holyhead to Middletown (Delaware) | 3,369.97 mi (5,423.44 km) |
| Holyhead to Middletown (New York) | 3,228.46 mi (5,195.71 km) |
