| Castelo Branco to Glyka Nera | 1,681.63 mi (2,706.33 km) |
| Castelo Branco to Grevena | 1,525.50 mi (2,455.05 km) |
| Castelo Branco to Ialysos | 1,939.20 mi (3,120.85 km) |
| Castelo Branco to Ilion | 1,673.10 mi (2,692.60 km) |
| Castelo Branco to Ilioupoli | 1,677.43 mi (2,699.57 km) |
| Castelo Branco to Ioannina | 1,500.01 mi (2,414.03 km) |
| Castelo Branco to Irakleio | 1,803.28 mi (2,902.10 km) |
| Castelo Branco to Irakleio | 1,676.34 mi (2,697.81 km) |
| Castelo Branco to Kaisariani | 1,677.28 mi (2,699.32 km) |
| Castelo Branco to Kalamaria | 1,599.78 mi (2,574.60 km) |
| Castelo Branco to Kalamata | 1,606.84 mi (2,585.95 km) |
| Castelo Branco to Kallithea | 1,674.51 mi (2,694.86 km) |
| Castelo Branco to Kalymnos | 1,865.80 mi (3,002.72 km) |
| Castelo Branco to Kalyvia Thorikou | 1,687.96 mi (2,716.50 km) |
| Castelo Branco to Kamatero | 1,673.29 mi (2,692.91 km) |
