| Llantrisant to Marshall (Minnesota) | 4,008.66 mi (6,451.32 km) |
| Llantrisant to Marshall (Missouri) | 4,166.22 mi (6,704.89 km) |
| Llantrisant to Marshall (Texas) | 4,536.32 mi (7,300.50 km) |
| Llantrisant to Marshalltown (Iowa) | 4,015.92 mi (6,463.00 km) |
| Llantrisant to Marshfield (Wisconsin) | 3,792.52 mi (6,103.47 km) |
| Llantrisant to Martha Lake (Washington) | 4,679.17 mi (7,530.40 km) |
| Llantrisant to Martin (Tennessee) | 4,129.48 mi (6,645.75 km) |
| Llantrisant to Martinez (California) | 5,232.74 mi (8,421.28 km) |
| Llantrisant to Martinez (Georgia) | 3,989.13 mi (6,419.88 km) |
| Llantrisant to Martinsburg (West Virginia) | 3,544.97 mi (5,705.09 km) |
| Llantrisant to Martinsville (Indiana) | 3,887.89 mi (6,256.95 km) |
| Llantrisant to Martinsville (New Jersey) | 3,355.34 mi (5,399.91 km) |
| Llantrisant to Martinsville (Virginia) | 3,747.97 mi (6,031.77 km) |
| Llantrisant to Maryland City (Maryland) | 3,512.54 mi (5,652.89 km) |
| Llantrisant to Maryland Heights (Missouri) | 4,079.65 mi (6,565.55 km) |
