| South Houston to Celbridge | 4,551.06 mi (7,324.23 km) |
| South Houston to Clondalkin | 4,557.10 mi (7,333.94 km) |
| South Houston to Clonmel | 4,525.01 mi (7,282.30 km) |
| South Houston to Cobh | 4,511.66 mi (7,260.81 km) |
| South Houston to Cork | 4,503.65 mi (7,247.92 km) |
| South Houston to Donegal | 4,463.48 mi (7,183.28 km) |
| South Houston to Douglas | 4,505.47 mi (7,250.85 km) |
| South Houston to Drogheda | 4,550.37 mi (7,323.12 km) |
| South Houston to Dublin | 4,561.74 mi (7,341.41 km) |
| South Houston to Dun Dealgan | 4,542.15 mi (7,309.89 km) |
| South Houston to Ennis | 4,464.18 mi (7,184.40 km) |
| South Houston to Enniscorthy | 4,567.84 mi (7,351.23 km) |
| South Houston to Finglas | 4,561.04 mi (7,340.29 km) |
| South Houston to Galway | 4,453.26 mi (7,166.83 km) |
| South Houston to Glanmire | 4,506.11 mi (7,251.88 km) |
