| Llantrisant to Dallas (Texas) | 4,618.68 mi (7,433.06 km) |
| Llantrisant to Dalton (Georgia) | 4,047.90 mi (6,514.47 km) |
| Llantrisant to Daly City (California) | 5,261.39 mi (8,467.39 km) |
| Llantrisant to Damascus (Maryland) | 3,521.18 mi (5,666.80 km) |
| Llantrisant to Damascus (Oregon) | 4,821.01 mi (7,758.67 km) |
| Llantrisant to Dana Point (California) | 5,347.47 mi (8,605.92 km) |
| Llantrisant to Danbury (Connecticut) | 3,276.03 mi (5,272.26 km) |
| Llantrisant to Dania Beach (Florida) | 4,273.83 mi (6,878.06 km) |
| Llantrisant to Danville (California) | 5,238.89 mi (8,431.18 km) |
| Llantrisant to Danville (Illinois) | 3,900.70 mi (6,277.57 km) |
| Llantrisant to Danville (Indiana) | 3,874.79 mi (6,235.87 km) |
| Llantrisant to Danville (Kentucky) | 3,904.16 mi (6,283.13 km) |
| Llantrisant to Danville (Virginia) | 3,733.75 mi (6,008.90 km) |
| Llantrisant to Daphne (Alabama) | 4,369.90 mi (7,032.67 km) |
| Llantrisant to Darby (Pennsylvania) | 3,413.00 mi (5,492.69 km) |
