| Clayton to Glyka Nera | 1,630.88 mi (2,624.65 km) |
| Clayton to Grevena | 1,436.55 mi (2,311.91 km) |
| Clayton to Ialysos | 1,866.70 mi (3,004.17 km) |
| Clayton to Ilion | 1,623.51 mi (2,612.79 km) |
| Clayton to Ilioupoli | 1,630.57 mi (2,624.15 km) |
| Clayton to Ioannina | 1,438.93 mi (2,315.73 km) |
| Clayton to Irakleio | 1,818.71 mi (2,926.93 km) |
| Clayton to Irakleio | 1,624.94 mi (2,615.09 km) |
| Clayton to Kaisariani | 1,629.00 mi (2,621.62 km) |
| Clayton to Kalamaria | 1,464.81 mi (2,357.39 km) |
| Clayton to Kalamata | 1,623.53 mi (2,612.82 km) |
| Clayton to Kallithea | 1,627.95 mi (2,619.93 km) |
| Clayton to Kalymnos | 1,794.66 mi (2,888.23 km) |
| Clayton to Kalyvia Thorikou | 1,641.69 mi (2,642.04 km) |
| Clayton to Kamatero | 1,622.53 mi (2,611.20 km) |
