| Barreiro to Ifield | 962.11 mi (1,548.36 km) |
| Barreiro to Ilford | 994.41 mi (1,600.35 km) |
| Barreiro to Ilfracombe | 899.13 mi (1,447.01 km) |
| Barreiro to Ilkeston | 1,055.08 mi (1,697.99 km) |
| Barreiro to Ilkley | 1,108.12 mi (1,783.34 km) |
| Barreiro to Immingham | 1,114.22 mi (1,793.17 km) |
| Barreiro to Ince-in-Makerfield | 1,072.26 mi (1,725.63 km) |
| Barreiro to Inverness | 1,317.99 mi (2,121.10 km) |
| Barreiro to Inverurie | 1,321.20 mi (2,126.26 km) |
| Barreiro to Ipswich | 1,047.67 mi (1,686.06 km) |
| Barreiro to Irlam | 1,068.49 mi (1,719.56 km) |
| Barreiro to Irthlingborough | 1,026.94 mi (1,652.70 km) |
| Barreiro to Irvine | 1,188.92 mi (1,913.39 km) |
| Barreiro to Islington | 989.59 mi (1,592.58 km) |
| Barreiro to Iver | 979.80 mi (1,576.83 km) |
