| Castel Gandolfo to Kaneohe (Hawaii) | 8,030.67 mi (12,924.12 km) |
| Castel Gandolfo to Kankakee (Illinois) | 4,865.59 mi (7,830.41 km) |
| Castel Gandolfo to Kannapolis (North Carolina) | 4,796.37 mi (7,719.02 km) |
| Castel Gandolfo to Kansas City (Kansas) | 5,229.99 mi (8,416.85 km) |
| Castel Gandolfo to Kansas City (Missouri) | 5,222.48 mi (8,404.77 km) |
| Castel Gandolfo to Kapaa (Hawaii) | 7,996.43 mi (12,869.01 km) |
| Castel Gandolfo to Kapolei (Hawaii) | 8,037.64 mi (12,935.33 km) |
| Castel Gandolfo to Katy (Texas) | 5,720.28 mi (9,205.91 km) |
| Castel Gandolfo to Kaukauna (Wisconsin) | 4,744.86 mi (7,636.11 km) |
| Castel Gandolfo to Kaysville (Utah) | 5,752.16 mi (9,257.20 km) |
| Castel Gandolfo to Kearney (Missouri) | 5,204.02 mi (8,375.06 km) |
| Castel Gandolfo to Kearney (Nebraska) | 5,321.04 mi (8,563.38 km) |
| Castel Gandolfo to Kearns (Utah) | 5,774.70 mi (9,293.49 km) |
| Castel Gandolfo to Kearny (New Jersey) | 4,297.17 mi (6,915.63 km) |
| Castel Gandolfo to Keene (New Hampshire) | 4,137.70 mi (6,658.98 km) |
