| Port Huron to Ickenham | 3,683.96 mi (5,928.77 km) |
| Port Huron to Ifield | 3,706.33 mi (5,964.76 km) |
| Port Huron to Ilford | 3,704.68 mi (5,962.11 km) |
| Port Huron to Ilfracombe | 3,549.86 mi (5,712.94 km) |
| Port Huron to Ilkeston | 3,610.16 mi (5,809.98 km) |
| Port Huron to Ilkley | 3,564.59 mi (5,736.66 km) |
| Port Huron to Immingham | 3,633.22 mi (5,847.10 km) |
| Port Huron to Ince-in-Makerfield | 3,545.62 mi (5,706.13 km) |
| Port Huron to Inverness | 3,390.12 mi (5,455.86 km) |
| Port Huron to Inverurie | 3,459.48 mi (5,567.50 km) |
| Port Huron to Ipswich | 3,730.68 mi (6,003.94 km) |
| Port Huron to Irlam | 3,554.88 mi (5,721.03 km) |
| Port Huron to Irthlingborough | 3,655.13 mi (5,882.36 km) |
| Port Huron to Irvine | 3,416.57 mi (5,498.43 km) |
| Port Huron to Islington | 3,697.78 mi (5,951.01 km) |
