| South Houston to Glyka Nera | 6,330.05 mi (10,187.24 km) |
| South Houston to Grevena | 6,137.68 mi (9,877.63 km) |
| South Houston to Ialysos | 6,578.90 mi (10,587.71 km) |
| South Houston to Ilion | 6,322.05 mi (10,174.35 km) |
| South Houston to Ilioupoli | 6,328.61 mi (10,184.91 km) |
| South Houston to Ioannina | 6,132.19 mi (9,868.80 km) |
| South Houston to Irakleio | 6,503.89 mi (10,467.01 km) |
| South Houston to Irakleio | 6,324.06 mi (10,177.59 km) |
| South Houston to Kaisariani | 6,327.38 mi (10,182.93 km) |
| South Houston to Kalamaria | 6,177.63 mi (9,941.93 km) |
| South Houston to Kalamata | 6,299.50 mi (10,138.06 km) |
| South Houston to Kallithea | 6,325.78 mi (10,180.37 km) |
| South Houston to Kalymnos | 6,504.65 mi (10,468.23 km) |
| South Houston to Kalyvia Thorikou | 6,340.00 mi (10,203.25 km) |
| South Houston to Kamatero | 6,321.36 mi (10,173.25 km) |
