| Castel Gandolfo to Joliet (Illinois) | 4,859.05 mi (7,819.88 km) |
| Castel Gandolfo to Jonesboro (Arkansas) | 5,217.29 mi (8,396.42 km) |
| Castel Gandolfo to Joplin (Missouri) | 5,316.53 mi (8,556.12 km) |
| Castel Gandolfo to Joppatowne (Maryland) | 4,446.40 mi (7,155.79 km) |
| Castel Gandolfo to Juana Díaz (Puerto Rico) | 4,845.89 mi (7,798.71 km) |
| Castel Gandolfo to Junction City (Kansas) | 5,316.82 mi (8,556.60 km) |
| Castel Gandolfo to Juneau (Alaska) | 5,255.95 mi (8,458.63 km) |
| Castel Gandolfo to Jupiter (Florida) | 5,138.69 mi (8,269.93 km) |
| Castel Gandolfo to Jupiter Farms (Florida) | 5,143.66 mi (8,277.91 km) |
| Castel Gandolfo to Jurupa Valley (California) | 6,322.34 mi (10,174.82 km) |
| Castel Gandolfo to Justice (Illinois) | 4,836.37 mi (7,783.38 km) |
| Castel Gandolfo to Kahului (Hawaii) | 8,054.54 mi (12,962.52 km) |
| Castel Gandolfo to Kailua (Hawaii) | 8,031.19 mi (12,924.95 km) |
| Castel Gandolfo to Kalamazoo (Michigan) | 4,723.18 mi (7,601.22 km) |
| Castel Gandolfo to Kalispell (Montana) | 5,431.61 mi (8,741.33 km) |
