| Simi Valley to Johnstown (Pennsylvania) | 2,209.77 mi (3,556.28 km) |
| Simi Valley to Joliet (Illinois) | 1,731.76 mi (2,787.00 km) |
| Simi Valley to Jonesboro (Arkansas) | 1,586.05 mi (2,552.51 km) |
| Simi Valley to Joplin (Missouri) | 1,370.96 mi (2,206.35 km) |
| Simi Valley to Joppatowne (Maryland) | 2,349.45 mi (3,781.08 km) |
| Simi Valley to Juana Díaz (Puerto Rico) | 3,388.03 mi (5,452.51 km) |
| Simi Valley to Junction City (Kansas) | 1,254.26 mi (2,018.54 km) |
| Simi Valley to Juneau (Alaska) | 1,815.87 mi (2,922.36 km) |
| Simi Valley to Jupiter (Florida) | 2,338.74 mi (3,763.84 km) |
| Simi Valley to Jupiter Farms (Florida) | 2,332.63 mi (3,754.00 km) |
| Simi Valley to Jurupa Valley (California) | 75.37 mi (121.30 km) |
| Simi Valley to Justice (Illinois) | 1,749.84 mi (2,816.10 km) |
| Simi Valley to Kahului (Hawaii) | 2,470.68 mi (3,976.17 km) |
| Simi Valley to Kailua (Hawaii) | 2,524.57 mi (4,062.91 km) |
| Simi Valley to Kalamazoo (Michigan) | 1,868.56 mi (3,007.15 km) |
