| Llantwit Major to Delhi (California) | 5,226.88 mi (8,411.86 km) |
| Llantwit Major to Delray Beach (Florida) | 4,247.83 mi (6,836.22 km) |
| Llantwit Major to Deltona (Florida) | 4,174.07 mi (6,717.51 km) |
| Llantwit Major to Deming (New Mexico) | 5,065.49 mi (8,152.12 km) |
| Llantwit Major to Denison (Texas) | 4,561.94 mi (7,341.73 km) |
| Llantwit Major to Dent (Ohio) | 3,827.09 mi (6,159.11 km) |
| Llantwit Major to Denton (Texas) | 4,611.77 mi (7,421.92 km) |
| Llantwit Major to Dentsville (South Carolina) | 3,913.33 mi (6,297.90 km) |
| Llantwit Major to Denver (Colorado) | 4,567.17 mi (7,350.15 km) |
| Llantwit Major to Depew (New York) | 3,424.32 mi (5,510.91 km) |
| Llantwit Major to Derby (Connecticut) | 3,261.73 mi (5,249.25 km) |
| Llantwit Major to Derby (Kansas) | 4,397.95 mi (7,077.82 km) |
| Llantwit Major to Des Moines (Iowa) | 4,064.97 mi (6,541.94 km) |
| Llantwit Major to Des Moines (Washington) | 4,711.44 mi (7,582.33 km) |
| Llantwit Major to Des Plaines (Illinois) | 3,825.39 mi (6,156.37 km) |
