| Port Huron to Celbridge | 3,399.96 mi (5,471.71 km) |
| Port Huron to Clondalkin | 3,405.96 mi (5,481.37 km) |
| Port Huron to Clonmel | 3,377.87 mi (5,436.16 km) |
| Port Huron to Cobh | 3,366.80 mi (5,418.34 km) |
| Port Huron to Cork | 3,358.76 mi (5,405.40 km) |
| Port Huron to Donegal | 3,309.60 mi (5,326.29 km) |
| Port Huron to Douglas | 3,360.63 mi (5,408.41 km) |
| Port Huron to Drogheda | 3,398.09 mi (5,468.70 km) |
| Port Huron to Dublin | 3,410.43 mi (5,488.56 km) |
| Port Huron to Dun Dealgan | 3,389.11 mi (5,454.24 km) |
| Port Huron to Ennis | 3,316.21 mi (5,336.93 km) |
| Port Huron to Enniscorthy | 3,419.37 mi (5,502.94 km) |
| Port Huron to Finglas | 3,409.40 mi (5,486.90 km) |
| Port Huron to Galway | 3,303.91 mi (5,317.13 km) |
| Port Huron to Glanmire | 3,361.09 mi (5,409.14 km) |
