| Dorchester to Ilawa | 949.59 mi (1,528.22 km) |
| Dorchester to Imielin | 950.61 mi (1,529.85 km) |
| Dorchester to Inowroclaw | 893.61 mi (1,438.13 km) |
| Dorchester to Janow Lubelski | 1,082.13 mi (1,741.53 km) |
| Dorchester to Jarocin | 862.09 mi (1,387.40 km) |
| Dorchester to Jaroslaw | 1,102.66 mi (1,774.57 km) |
| Dorchester to Jasien | 913.57 mi (1,470.24 km) |
| Dorchester to Jaslo | 1,054.19 mi (1,696.55 km) |
| Dorchester to Jastrzebie-Zdroj | 925.45 mi (1,489.37 km) |
| Dorchester to Jawor | 810.56 mi (1,304.48 km) |
| Dorchester to Jaworzno | 952.02 mi (1,532.12 km) |
| Dorchester to Jedrzejow | 991.64 mi (1,595.90 km) |
| Dorchester to Jelcz-Laskowice | 859.65 mi (1,383.48 km) |
| Dorchester to Jelenia Gora | 791.46 mi (1,273.72 km) |
| Dorchester to Jozefoslaw | 1,012.12 mi (1,628.86 km) |
