| Olen to Grevena | 1,102.62 mi (1,774.49 km) |
| Olen to Ialysos | 1,533.01 mi (2,467.14 km) |
| Olen to Ilion | 1,289.56 mi (2,075.35 km) |
| Olen to Ilioupoli | 1,296.64 mi (2,086.74 km) |
| Olen to Ioannina | 1,105.51 mi (1,779.14 km) |
| Olen to Irakleio | 1,485.28 mi (2,390.33 km) |
| Olen to Irakleio | 1,290.97 mi (2,077.62 km) |
| Olen to Kaisariani | 1,295.05 mi (2,084.18 km) |
| Olen to Kalamaria | 1,130.97 mi (1,820.12 km) |
| Olen to Kalamata | 1,291.32 mi (2,078.18 km) |
| Olen to Kallithea | 1,294.02 mi (2,082.53 km) |
| Olen to Kalymnos | 1,460.77 mi (2,350.89 km) |
| Olen to Kalyvia Thorikou | 1,307.74 mi (2,104.60 km) |
| Olen to Kamatero | 1,288.57 mi (2,073.75 km) |
| Olen to Karditsa | 1,157.31 mi (1,862.51 km) |
