| Port Neches to Ickenham | 4,766.94 mi (7,671.64 km) |
| Port Neches to Ifield | 4,787.96 mi (7,705.48 km) |
| Port Neches to Ilford | 4,788.17 mi (7,705.82 km) |
| Port Neches to Ilfracombe | 4,627.73 mi (7,447.61 km) |
| Port Neches to Ilkeston | 4,697.17 mi (7,559.36 km) |
| Port Neches to Ilkley | 4,654.16 mi (7,490.14 km) |
| Port Neches to Immingham | 4,723.00 mi (7,600.93 km) |
| Port Neches to Ince-in-Makerfield | 4,633.46 mi (7,456.84 km) |
| Port Neches to Inverness | 4,486.96 mi (7,221.06 km) |
| Port Neches to Inverurie | 4,556.56 mi (7,333.07 km) |
| Port Neches to Ipswich | 4,816.86 mi (7,751.99 km) |
| Port Neches to Irlam | 4,642.55 mi (7,471.46 km) |
| Port Neches to Irthlingborough | 4,740.60 mi (7,629.26 km) |
| Port Neches to Irvine | 4,509.16 mi (7,256.79 km) |
| Port Neches to Islington | 4,781.05 mi (7,694.35 km) |
