| Barcelona to Glyka Nera | 1,172.58 mi (1,887.08 km) |
| Barcelona to Grevena | 1,009.76 mi (1,625.05 km) |
| Barcelona to Ialysos | 1,432.25 mi (2,304.99 km) |
| Barcelona to Ilion | 1,164.01 mi (1,873.29 km) |
| Barcelona to Ilioupoli | 1,168.77 mi (1,880.96 km) |
| Barcelona to Ioannina | 986.06 mi (1,586.91 km) |
| Barcelona to Irakleio | 1,307.31 mi (2,103.92 km) |
| Barcelona to Irakleio | 1,167.10 mi (1,878.26 km) |
| Barcelona to Kaisariani | 1,168.44 mi (1,880.42 km) |
| Barcelona to Kalamaria | 1,082.31 mi (1,741.81 km) |
| Barcelona to Kalamata | 1,105.78 mi (1,779.59 km) |
| Barcelona to Kallithea | 1,165.82 mi (1,876.21 km) |
| Barcelona to Kalymnos | 1,357.76 mi (2,185.10 km) |
| Barcelona to Kalyvia Thorikou | 1,179.60 mi (1,898.38 km) |
| Barcelona to Kamatero | 1,164.06 mi (1,873.38 km) |
