| Rhondda to Indianola (Iowa) | 4,068.37 mi (6,547.42 km) |
| Rhondda to Indio (California) | 5,279.02 mi (8,495.76 km) |
| Rhondda to Inglewood (California) | 5,337.16 mi (8,589.33 km) |
| Rhondda to Inkster (Michigan) | 3,630.93 mi (5,843.41 km) |
| Rhondda to Inver Grove Heights (Minnesota) | 3,887.64 mi (6,256.56 km) |
| Rhondda to Inwood (New York) | 3,317.37 mi (5,338.79 km) |
| Rhondda to Iona (Florida) | 4,324.70 mi (6,959.93 km) |
| Rhondda to Ionia (Michigan) | 3,669.46 mi (5,905.42 km) |
| Rhondda to Iowa City (Iowa) | 3,977.65 mi (6,401.42 km) |
| Rhondda to Irmo (South Carolina) | 3,920.86 mi (6,310.01 km) |
| Rhondda to Irondale (Alabama) | 4,172.81 mi (6,715.49 km) |
| Rhondda to Ironton (Ohio) | 3,774.70 mi (6,074.79 km) |
| Rhondda to Irvine (California) | 5,333.95 mi (8,584.16 km) |
| Rhondda to Irving (Texas) | 4,619.59 mi (7,434.52 km) |
| Rhondda to Isabela (Puerto Rico) | 4,097.46 mi (6,594.23 km) |
