| Thalwil to Ifield | 476.25 mi (766.45 km) |
| Thalwil to Ilford | 481.68 mi (775.19 km) |
| Thalwil to Ilfracombe | 632.12 mi (1,017.30 km) |
| Thalwil to Ilkeston | 587.09 mi (944.83 km) |
| Thalwil to Ilkley | 645.38 mi (1,038.64 km) |
| Thalwil to Immingham | 582.85 mi (938.01 km) |
| Thalwil to Ince-in-Makerfield | 653.34 mi (1,051.44 km) |
| Thalwil to Inverness | 884.18 mi (1,422.95 km) |
| Thalwil to Inverurie | 829.16 mi (1,334.40 km) |
| Thalwil to Ipswich | 467.22 mi (751.93 km) |
| Thalwil to Irlam | 643.57 mi (1,035.72 km) |
| Thalwil to Irthlingborough | 536.78 mi (863.87 km) |
| Thalwil to Irvine | 807.49 mi (1,299.53 km) |
| Thalwil to Islington | 487.86 mi (785.14 km) |
| Thalwil to Iver | 501.58 mi (807.22 km) |
