| Gresham to Glyka Nera | 6,299.29 mi (10,137.73 km) |
| Gresham to Grevena | 6,114.70 mi (9,840.66 km) |
| Gresham to Ialysos | 6,487.39 mi (10,440.45 km) |
| Gresham to Ilion | 6,293.50 mi (10,128.40 km) |
| Gresham to Ilioupoli | 6,300.92 mi (10,140.35 km) |
| Gresham to Ioannina | 6,128.47 mi (9,862.83 km) |
| Gresham to Irakleio | 6,495.81 mi (10,453.99 km) |
| Gresham to Irakleio | 6,293.85 mi (10,128.97 km) |
| Gresham to Kaisariani | 6,298.87 mi (10,137.05 km) |
| Gresham to Kalamaria | 6,115.78 mi (9,842.39 km) |
| Gresham to Kalamata | 6,321.87 mi (10,174.07 km) |
| Gresham to Kallithea | 6,298.79 mi (10,136.93 km) |
| Gresham to Kalymnos | 6,427.65 mi (10,344.30 km) |
| Gresham to Kalyvia Thorikou | 6,310.82 mi (10,156.29 km) |
| Gresham to Kamatero | 6,292.07 mi (10,126.11 km) |
