| Duchcov to Ifield | 608.65 mi (979.54 km) |
| Duchcov to Ilford | 595.72 mi (958.72 km) |
| Duchcov to Ilfracombe | 777.63 mi (1,251.48 km) |
| Duchcov to Ilkeston | 662.56 mi (1,066.28 km) |
| Duchcov to Ilkley | 695.45 mi (1,119.22 km) |
| Duchcov to Immingham | 626.77 mi (1,008.69 km) |
| Duchcov to Ince-in-Makerfield | 721.38 mi (1,160.95 km) |
| Duchcov to Inverness | 866.07 mi (1,393.80 km) |
| Duchcov to Inverurie | 798.63 mi (1,285.26 km) |
| Duchcov to Ipswich | 552.03 mi (888.41 km) |
| Duchcov to Irlam | 713.11 mi (1,147.64 km) |
| Duchcov to Irthlingborough | 628.37 mi (1,011.26 km) |
| Duchcov to Irvine | 835.10 mi (1,343.96 km) |
| Duchcov to Islington | 603.80 mi (971.73 km) |
| Duchcov to Iver | 621.17 mi (999.67 km) |
