| Opfikon to Ifield | 470.07 mi (756.51 km) |
| Opfikon to Ilford | 474.95 mi (764.36 km) |
| Opfikon to Ilfracombe | 626.99 mi (1,009.04 km) |
| Opfikon to Ilkeston | 579.73 mi (932.98 km) |
| Opfikon to Ilkley | 637.58 mi (1,026.08 km) |
| Opfikon to Immingham | 574.74 mi (924.95 km) |
| Opfikon to Ince-in-Makerfield | 645.98 mi (1,039.60 km) |
| Opfikon to Inverness | 875.46 mi (1,408.91 km) |
| Opfikon to Inverurie | 820.16 mi (1,319.92 km) |
| Opfikon to Ipswich | 459.62 mi (739.68 km) |
| Opfikon to Irlam | 636.22 mi (1,023.90 km) |
| Opfikon to Irthlingborough | 529.66 mi (852.40 km) |
| Opfikon to Irvine | 799.53 mi (1,286.73 km) |
| Opfikon to Islington | 481.22 mi (774.45 km) |
| Opfikon to Iver | 495.12 mi (796.82 km) |
