| Willebroek to Grevena | 1,115.95 mi (1,795.95 km) |
| Willebroek to Ialysos | 1,547.72 mi (2,490.81 km) |
| Willebroek to Ilion | 1,302.91 mi (2,096.83 km) |
| Willebroek to Ilioupoli | 1,309.96 mi (2,108.17 km) |
| Willebroek to Ioannina | 1,118.17 mi (1,799.52 km) |
| Willebroek to Irakleio | 1,497.96 mi (2,410.73 km) |
| Willebroek to Irakleio | 1,304.37 mi (2,099.18 km) |
| Willebroek to Kaisariani | 1,308.39 mi (2,105.65 km) |
| Willebroek to Kalamaria | 1,145.54 mi (1,843.57 km) |
| Willebroek to Kalamata | 1,303.13 mi (2,097.18 km) |
| Willebroek to Kallithea | 1,307.32 mi (2,103.93 km) |
| Willebroek to Kalymnos | 1,475.23 mi (2,374.16 km) |
| Willebroek to Kalyvia Thorikou | 1,321.09 mi (2,126.09 km) |
| Willebroek to Kamatero | 1,301.94 mi (2,095.27 km) |
| Willebroek to Karditsa | 1,170.45 mi (1,883.66 km) |
