| Pontypridd to Marshall (Minnesota) | 4,007.61 mi (6,449.62 km) |
| Pontypridd to Marshall (Missouri) | 4,165.63 mi (6,703.93 km) |
| Pontypridd to Marshall (Texas) | 4,536.06 mi (7,300.08 km) |
| Pontypridd to Marshalltown (Iowa) | 4,015.15 mi (6,461.76 km) |
| Pontypridd to Marshfield (Wisconsin) | 3,791.69 mi (6,102.14 km) |
| Pontypridd to Martha Lake (Washington) | 4,676.87 mi (7,526.70 km) |
| Pontypridd to Martin (Tennessee) | 4,129.27 mi (6,645.41 km) |
| Pontypridd to Martinez (California) | 5,230.84 mi (8,418.23 km) |
| Pontypridd to Martinez (Georgia) | 3,989.44 mi (6,420.38 km) |
| Pontypridd to Martinsburg (West Virginia) | 3,545.08 mi (5,705.26 km) |
| Pontypridd to Martinsville (Indiana) | 3,887.59 mi (6,256.47 km) |
| Pontypridd to Martinsville (New Jersey) | 3,355.53 mi (5,400.20 km) |
| Pontypridd to Martinsville (Virginia) | 3,748.18 mi (6,032.12 km) |
| Pontypridd to Maryland City (Maryland) | 3,512.73 mi (5,653.20 km) |
| Pontypridd to Maryland Heights (Missouri) | 4,079.20 mi (6,564.84 km) |
