| Rhondda to Glen Carbon (Illinois) | 4,054.76 mi (6,525.50 km) |
| Rhondda to Glen Cove (New York) | 3,301.74 mi (5,313.64 km) |
| Rhondda to Glen Ellyn (Illinois) | 3,835.18 mi (6,172.12 km) |
| Rhondda to Glen Rock (New Jersey) | 3,318.39 mi (5,340.43 km) |
| Rhondda to Glendale (Arizona) | 5,149.59 mi (8,287.46 km) |
| Rhondda to Glendale (California) | 5,321.23 mi (8,563.68 km) |
| Rhondda to Glendale (Wisconsin) | 3,772.72 mi (6,071.60 km) |
| Rhondda to Glendale Heights (Illinois) | 3,833.36 mi (6,169.19 km) |
| Rhondda to Glendora (California) | 5,310.05 mi (8,545.71 km) |
| Rhondda to Glenmont (Maryland) | 3,520.71 mi (5,666.03 km) |
| Rhondda to Glenn Dale (Maryland) | 3,514.55 mi (5,656.12 km) |
| Rhondda to Glenn Heights (Texas) | 4,630.79 mi (7,452.53 km) |
| Rhondda to Glenpool (Oklahoma) | 4,425.88 mi (7,122.77 km) |
| Rhondda to Glens Falls (New York) | 3,200.92 mi (5,151.39 km) |
| Rhondda to Glenvar Heights (Florida) | 4,295.47 mi (6,912.89 km) |
