| Castelo Branco to Illzach | 919.99 mi (1,480.59 km) |
| Castelo Branco to Ingre | 726.39 mi (1,169.01 km) |
| Castelo Branco to Irigny | 743.48 mi (1,196.52 km) |
| Castelo Branco to Isbergues | 888.37 mi (1,429.69 km) |
| Castelo Branco to Issoire | 673.36 mi (1,083.66 km) |
| Castelo Branco to Issoudun | 684.63 mi (1,101.80 km) |
| Castelo Branco to Issy-les-Moulineaux | 786.39 mi (1,265.58 km) |
| Castelo Branco to Istres | 692.57 mi (1,114.58 km) |
| Castelo Branco to Ivry-sur-Seine | 788.72 mi (1,269.32 km) |
| Castelo Branco to Jarville-la-Malgrange | 910.93 mi (1,465.99 km) |
| Castelo Branco to Jeumont | 916.84 mi (1,475.50 km) |
| Castelo Branco to Joigny | 781.23 mi (1,257.27 km) |
| Castelo Branco to Joinville-le-Pont | 792.40 mi (1,275.24 km) |
| Castelo Branco to Joue-les-Tours | 660.97 mi (1,063.73 km) |
| Castelo Branco to Jouy-le-Moutier | 789.34 mi (1,270.33 km) |
