| Dorchester to Ifield | 101.11 mi (162.72 km) |
| Dorchester to Ilford | 123.87 mi (199.34 km) |
| Dorchester to Ilfracombe | 80.77 mi (129.99 km) |
| Dorchester to Ilkeston | 163.11 mi (262.49 km) |
| Dorchester to Ilkley | 223.27 mi (359.32 km) |
| Dorchester to Immingham | 221.21 mi (356.01 km) |
| Dorchester to Ince-in-Makerfield | 195.30 mi (314.30 km) |
| Dorchester to Inverness | 472.78 mi (760.86 km) |
| Dorchester to Inverurie | 453.58 mi (729.96 km) |
| Dorchester to Ipswich | 180.56 mi (290.59 km) |
| Dorchester to Irlam | 188.60 mi (303.52 km) |
| Dorchester to Irthlingborough | 135.98 mi (218.84 km) |
| Dorchester to Irvine | 351.14 mi (565.10 km) |
| Dorchester to Islington | 116.27 mi (187.11 km) |
| Dorchester to Iver | 100.51 mi (161.75 km) |
