| Groslay to Grevena | 1,118.32 mi (1,799.76 km) |
| Groslay to Ialysos | 1,559.88 mi (2,510.39 km) |
| Groslay to Ilion | 1,303.34 mi (2,097.52 km) |
| Groslay to Ilioupoli | 1,310.01 mi (2,108.26 km) |
| Groslay to Ioannina | 1,114.06 mi (1,792.90 km) |
| Groslay to Irakleio | 1,490.24 mi (2,398.30 km) |
| Groslay to Irakleio | 1,305.25 mi (2,100.59 km) |
| Groslay to Kaisariani | 1,308.71 mi (2,106.16 km) |
| Groslay to Kalamaria | 1,159.94 mi (1,866.75 km) |
| Groslay to Kalamata | 1,288.87 mi (2,074.23 km) |
| Groslay to Kallithea | 1,307.22 mi (2,103.77 km) |
| Groslay to Kalymnos | 1,485.37 mi (2,390.48 km) |
| Groslay to Kalyvia Thorikou | 1,321.38 mi (2,126.55 km) |
| Groslay to Kamatero | 1,302.59 mi (2,096.32 km) |
| Groslay to Karditsa | 1,170.26 mi (1,883.35 km) |
