| Catford to Ifield | 23.65 mi (38.06 km) |
| Catford to Ilford | 9.01 mi (14.50 km) |
| Catford to Ilfracombe | 177.72 mi (286.01 km) |
| Catford to Ilkeston | 118.69 mi (191.02 km) |
| Catford to Ilkley | 187.20 mi (301.27 km) |
| Catford to Immingham | 150.07 mi (241.52 km) |
| Catford to Ince-in-Makerfield | 180.85 mi (291.06 km) |
| Catford to Inverness | 449.50 mi (723.40 km) |
| Catford to Inverurie | 414.12 mi (666.46 km) |
| Catford to Ipswich | 65.82 mi (105.93 km) |
| Catford to Irlam | 171.21 mi (275.53 km) |
| Catford to Irthlingborough | 65.78 mi (105.86 km) |
| Catford to Irvine | 345.56 mi (556.12 km) |
| Catford to Islington | 7.68 mi (12.37 km) |
| Catford to Iver | 21.57 mi (34.71 km) |
