| Castelo Branco to Ilawa | 1,581.09 mi (2,544.52 km) |
| Castelo Branco to Imielin | 1,476.27 mi (2,375.83 km) |
| Castelo Branco to Inowroclaw | 1,508.20 mi (2,427.21 km) |
| Castelo Branco to Janow Lubelski | 1,622.73 mi (2,611.54 km) |
| Castelo Branco to Jarocin | 1,454.48 mi (2,340.76 km) |
| Castelo Branco to Jaroslaw | 1,621.38 mi (2,609.36 km) |
| Castelo Branco to Jasien | 1,568.58 mi (2,524.39 km) |
| Castelo Branco to Jaslo | 1,564.61 mi (2,518.00 km) |
| Castelo Branco to Jastrzebie-Zdroj | 1,445.59 mi (2,326.45 km) |
| Castelo Branco to Jawor | 1,376.92 mi (2,215.94 km) |
| Castelo Branco to Jaworzno | 1,480.08 mi (2,381.96 km) |
| Castelo Branco to Jedrzejow | 1,532.49 mi (2,466.31 km) |
| Castelo Branco to Jelcz-Laskowice | 1,421.35 mi (2,287.44 km) |
| Castelo Branco to Jelenia Gora | 1,354.28 mi (2,179.50 km) |
| Castelo Branco to Jozefoslaw | 1,596.81 mi (2,569.82 km) |
