| Merthyr Tudful to Lake St. Louis (Missouri) | 4,082.79 mi (6,570.62 km) |
| Merthyr Tudful to Lake Station (Indiana) | 3,815.30 mi (6,140.13 km) |
| Merthyr Tudful to Lake Stevens (Washington) | 4,655.99 mi (7,493.10 km) |
| Merthyr Tudful to Lake Stickney (Washington) | 4,667.64 mi (7,511.84 km) |
| Merthyr Tudful to Lake Tapps (Washington) | 4,701.20 mi (7,565.85 km) |
| Merthyr Tudful to Lake Wales (Florida) | 4,239.19 mi (6,822.31 km) |
| Merthyr Tudful to Lake Wylie (South Carolina) | 3,867.65 mi (6,224.39 km) |
| Merthyr Tudful to Lake Zurich (Illinois) | 3,818.74 mi (6,145.67 km) |
| Merthyr Tudful to Lakeland (Florida) | 4,247.49 mi (6,835.67 km) |
| Merthyr Tudful to Lakeland (Tennessee) | 4,211.76 mi (6,778.18 km) |
| Merthyr Tudful to Lakeland Highlands (Florida) | 4,252.20 mi (6,843.26 km) |
| Merthyr Tudful to Lakeland North (Washington) | 4,698.28 mi (7,561.16 km) |
| Merthyr Tudful to Lakeland South (Washington) | 4,701.62 mi (7,566.52 km) |
| Merthyr Tudful to Lakeland Village (California) | 5,317.94 mi (8,558.40 km) |
| Merthyr Tudful to Lakeside (California) | 5,346.80 mi (8,604.85 km) |
