| Idanha-a-Nova to Ifield | 844.78 mi (1,359.54 km) |
| Idanha-a-Nova to Ilford | 877.27 mi (1,411.83 km) |
| Idanha-a-Nova to Ilfracombe | 794.36 mi (1,278.41 km) |
| Idanha-a-Nova to Ilkeston | 944.23 mi (1,519.59 km) |
| Idanha-a-Nova to Ilkley | 1,000.27 mi (1,609.77 km) |
| Idanha-a-Nova to Immingham | 1,001.74 mi (1,612.15 km) |
| Idanha-a-Nova to Ince-in-Makerfield | 966.02 mi (1,554.66 km) |
| Idanha-a-Nova to Inverness | 1,220.79 mi (1,964.67 km) |
| Idanha-a-Nova to Inverurie | 1,219.25 mi (1,962.20 km) |
| Idanha-a-Nova to Ipswich | 929.17 mi (1,495.35 km) |
| Idanha-a-Nova to Irlam | 961.58 mi (1,547.51 km) |
| Idanha-a-Nova to Irthlingborough | 913.05 mi (1,469.41 km) |
| Idanha-a-Nova to Irvine | 1,091.36 mi (1,756.38 km) |
| Idanha-a-Nova to Islington | 872.87 mi (1,404.75 km) |
| Idanha-a-Nova to Iver | 864.04 mi (1,390.54 km) |
