| Porthcawl to Idar-Oberstein | 497.29 mi (800.31 km) |
| Porthcawl to Idstein | 528.49 mi (850.52 km) |
| Porthcawl to Illertissen | 652.53 mi (1,050.14 km) |
| Porthcawl to Illingen | 494.14 mi (795.24 km) |
| Porthcawl to Ilmenau | 635.44 mi (1,022.63 km) |
| Porthcawl to Ilsede | 593.38 mi (954.96 km) |
| Porthcawl to Ilsenburg | 615.44 mi (990.46 km) |
| Porthcawl to Ilsfeld | 594.76 mi (957.18 km) |
| Porthcawl to Ilvesheim | 555.80 mi (894.47 km) |
| Porthcawl to Immenstadt im Allgau | 678.43 mi (1,091.83 km) |
| Porthcawl to Ingelheim | 523.56 mi (842.59 km) |
| Porthcawl to Ingolstadt | 693.99 mi (1,116.86 km) |
| Porthcawl to Iserlohn | 488.76 mi (786.58 km) |
| Porthcawl to Isernhagen-Sud | 579.71 mi (932.95 km) |
| Porthcawl to Ismaning | 718.74 mi (1,156.71 km) |
