| Walnut Creek to Johnstown (Pennsylvania) | 2,294.83 mi (3,693.17 km) |
| Walnut Creek to Joliet (Illinois) | 1,806.84 mi (2,907.83 km) |
| Walnut Creek to Jonesboro (Arkansas) | 1,731.44 mi (2,786.48 km) |
| Walnut Creek to Joplin (Missouri) | 1,505.33 mi (2,422.59 km) |
| Walnut Creek to Joppatowne (Maryland) | 2,440.61 mi (3,927.79 km) |
| Walnut Creek to Juana Díaz (Puerto Rico) | 3,596.58 mi (5,788.14 km) |
| Walnut Creek to Junction City (Kansas) | 1,360.58 mi (2,189.64 km) |
| Walnut Creek to Juneau (Alaska) | 1,520.62 mi (2,447.21 km) |
| Walnut Creek to Jupiter (Florida) | 2,537.07 mi (4,083.02 km) |
| Walnut Creek to Jupiter Farms (Florida) | 2,531.23 mi (4,073.63 km) |
| Walnut Creek to Jurupa Valley (California) | 371.35 mi (597.63 km) |
| Walnut Creek to Justice (Illinois) | 1,822.21 mi (2,932.56 km) |
| Walnut Creek to Kahului (Hawaii) | 2,363.15 mi (3,803.12 km) |
| Walnut Creek to Kailua (Hawaii) | 2,407.50 mi (3,874.50 km) |
| Walnut Creek to Kalamazoo (Michigan) | 1,935.31 mi (3,114.58 km) |
