| Rhondda to Desert Hot Springs (California) | 5,277.11 mi (8,492.69 km) |
| Rhondda to DeSoto (Texas) | 4,628.64 mi (7,449.07 km) |
| Rhondda to Destin (Florida) | 4,319.94 mi (6,952.28 km) |
| Rhondda to Destrehan (Louisiana) | 4,502.01 mi (7,245.28 km) |
| Rhondda to Detroit (Michigan) | 3,618.61 mi (5,823.59 km) |
| Rhondda to Diamond Bar (California) | 5,317.23 mi (8,557.26 km) |
| Rhondda to Diamond Springs (California) | 5,149.15 mi (8,286.76 km) |
| Rhondda to Dickinson (North Dakota) | 4,131.18 mi (6,648.49 km) |
| Rhondda to Dickinson (Texas) | 4,718.13 mi (7,593.09 km) |
| Rhondda to Dickson (Tennessee) | 4,079.63 mi (6,565.54 km) |
| Rhondda to Difficult Run (Virginia) | 3,540.54 mi (5,697.94 km) |
| Rhondda to Dinuba (California) | 5,225.35 mi (8,409.39 km) |
| Rhondda to Discovery Bay (California) | 5,217.24 mi (8,396.33 km) |
| Rhondda to Dix Hills (New York) | 3,292.60 mi (5,298.93 km) |
| Rhondda to Dixon (California) | 5,193.36 mi (8,357.91 km) |
