| Royal Palm Beach to Johnstown (Pennsylvania) | 944.17 mi (1,519.49 km) |
| Royal Palm Beach to Joliet (Illinois) | 1,118.27 mi (1,799.68 km) |
| Royal Palm Beach to Jonesboro (Arkansas) | 880.99 mi (1,417.81 km) |
| Royal Palm Beach to Joplin (Missouri) | 1,099.98 mi (1,770.25 km) |
| Royal Palm Beach to Joppatowne (Maryland) | 906.38 mi (1,458.68 km) |
| Royal Palm Beach to Juana Díaz (Puerto Rico) | 1,059.64 mi (1,705.33 km) |
| Royal Palm Beach to Junction City (Kansas) | 1,283.00 mi (2,064.78 km) |
| Royal Palm Beach to Juneau (Alaska) | 3,375.28 mi (5,432.00 km) |
| Royal Palm Beach to Jupiter (Florida) | 16.44 mi (26.46 km) |
| Royal Palm Beach to Jupiter Farms (Florida) | 15.09 mi (24.29 km) |
| Royal Palm Beach to Jurupa Valley (California) | 2,264.22 mi (3,643.91 km) |
| Royal Palm Beach to Justice (Illinois) | 1,125.61 mi (1,811.50 km) |
| Royal Palm Beach to Kahului (Hawaii) | 4,766.04 mi (7,670.19 km) |
| Royal Palm Beach to Kailua (Hawaii) | 4,829.35 mi (7,772.09 km) |
| Royal Palm Beach to Kalamazoo (Michigan) | 1,117.75 mi (1,798.85 km) |
