| Opatija to Ifield | 776.39 mi (1,249.48 km) |
| Opatija to Ilford | 778.54 mi (1,252.93 km) |
| Opatija to Ilfracombe | 935.91 mi (1,506.20 km) |
| Opatija to Ilkeston | 877.83 mi (1,412.73 km) |
| Opatija to Ilkley | 930.57 mi (1,497.62 km) |
| Opatija to Immingham | 864.36 mi (1,391.05 km) |
| Opatija to Ince-in-Makerfield | 943.72 mi (1,518.77 km) |
| Opatija to Inverness | 1,150.89 mi (1,852.18 km) |
| Opatija to Inverurie | 1,089.73 mi (1,753.75 km) |
| Opatija to Ipswich | 756.58 mi (1,217.59 km) |
| Opatija to Irlam | 934.13 mi (1,503.33 km) |
| Opatija to Irthlingborough | 830.18 mi (1,336.04 km) |
| Opatija to Irvine | 1,089.22 mi (1,752.94 km) |
| Opatija to Islington | 785.27 mi (1,263.77 km) |
| Opatija to Iver | 800.04 mi (1,287.54 km) |
