| Penarth to Miami Lakes (Florida) | 4,297.67 mi (6,916.44 km) |
| Penarth to Miami Shores (Florida) | 4,293.83 mi (6,910.25 km) |
| Penarth to Miami Springs (Florida) | 4,300.98 mi (6,921.75 km) |
| Penarth to Miamisburg (Ohio) | 3,803.04 mi (6,120.41 km) |
| Penarth to Michigan City (Indiana) | 3,811.20 mi (6,133.53 km) |
| Penarth to Middle Island (New York) | 3,286.67 mi (5,289.38 km) |
| Penarth to Middle River (Maryland) | 3,496.88 mi (5,627.68 km) |
| Penarth to Middle Valley (Tennessee) | 4,047.84 mi (6,514.37 km) |
| Penarth to Middleburg (Florida) | 4,159.41 mi (6,693.93 km) |
| Penarth to Middleburg Heights (Ohio) | 3,626.93 mi (5,836.98 km) |
| Penarth to Middlesex (New Jersey) | 3,364.18 mi (5,414.12 km) |
| Penarth to Middleton (Wisconsin) | 3,849.25 mi (6,194.77 km) |
| Penarth to Middletown (Connecticut) | 3,246.95 mi (5,225.46 km) |
| Penarth to Middletown (Delaware) | 3,463.23 mi (5,573.53 km) |
| Penarth to Middletown (New York) | 3,324.05 mi (5,349.54 km) |
