| Rhondda to Port Chester (New York) | 3,297.67 mi (5,307.09 km) |
| Rhondda to Port Hueneme (California) | 5,353.84 mi (8,616.17 km) |
| Rhondda to Port Huron (Michigan) | 3,566.34 mi (5,739.46 km) |
| Rhondda to Port Lavaca (Texas) | 4,824.30 mi (7,763.95 km) |
| Rhondda to Port Neches (Texas) | 4,646.60 mi (7,477.98 km) |
| Rhondda to Port Orange (Florida) | 4,155.40 mi (6,687.47 km) |
| Rhondda to Port Orchard (Washington) | 4,704.31 mi (7,570.86 km) |
| Rhondda to Port Royal (South Carolina) | 3,983.88 mi (6,411.44 km) |
| Rhondda to Port Salerno (Florida) | 4,217.98 mi (6,788.19 km) |
| Rhondda to Port St. John (Florida) | 4,178.13 mi (6,724.05 km) |
| Rhondda to Port St. Lucie (Florida) | 4,219.76 mi (6,791.05 km) |
| Rhondda to Port Washington (New York) | 3,305.59 mi (5,319.83 km) |
| Rhondda to Port Washington (Wisconsin) | 3,759.59 mi (6,050.48 km) |
| Rhondda to Port Wentworth (Georgia) | 4,012.39 mi (6,457.31 km) |
| Rhondda to Portage (Indiana) | 3,813.80 mi (6,137.72 km) |
