| Sun Prairie to Johnstown (Pennsylvania) | 566.74 mi (912.08 km) |
| Sun Prairie to Joliet (Illinois) | 127.63 mi (205.40 km) |
| Sun Prairie to Jonesboro (Arkansas) | 514.38 mi (827.81 km) |
| Sun Prairie to Joplin (Missouri) | 505.13 mi (812.93 km) |
| Sun Prairie to Joppatowne (Maryland) | 716.65 mi (1,153.34 km) |
| Sun Prairie to Juana Díaz (Puerto Rico) | 2,185.06 mi (3,516.51 km) |
| Sun Prairie to Junction City (Kansas) | 489.12 mi (787.17 km) |
| Sun Prairie to Juneau (Alaska) | 2,171.86 mi (3,495.27 km) |
| Sun Prairie to Jupiter (Florida) | 1,234.59 mi (1,986.88 km) |
| Sun Prairie to Jupiter Farms (Florida) | 1,232.00 mi (1,982.71 km) |
| Sun Prairie to Jurupa Valley (California) | 1,641.44 mi (2,641.64 km) |
| Sun Prairie to Justice (Illinois) | 122.09 mi (196.49 km) |
| Sun Prairie to Kahului (Hawaii) | 4,110.91 mi (6,615.88 km) |
| Sun Prairie to Kailua (Hawaii) | 4,152.90 mi (6,683.45 km) |
| Sun Prairie to Kalamazoo (Michigan) | 195.46 mi (314.57 km) |
