| Porthcawl to Ickenham | 139.46 mi (224.44 km) |
| Porthcawl to Ifield | 152.44 mi (245.32 km) |
| Porthcawl to Ilford | 162.41 mi (261.37 km) |
| Porthcawl to Ilfracombe | 26.41 mi (42.51 km) |
| Porthcawl to Ilkeston | 144.10 mi (231.90 km) |
| Porthcawl to Ilkley | 186.14 mi (299.57 km) |
| Porthcawl to Immingham | 207.36 mi (333.71 km) |
| Porthcawl to Ince-in-Makerfield | 149.55 mi (240.68 km) |
| Porthcawl to Inverness | 414.96 mi (667.81 km) |
| Porthcawl to Inverurie | 404.17 mi (650.45 km) |
| Porthcawl to Ipswich | 210.97 mi (339.53 km) |
| Porthcawl to Irlam | 145.88 mi (234.77 km) |
| Porthcawl to Irthlingborough | 143.50 mi (230.94 km) |
| Porthcawl to Irvine | 288.81 mi (464.80 km) |
| Porthcawl to Islington | 154.30 mi (248.33 km) |
