| Walnut Creek to Castle Pines (Colorado) | 930.86 mi (1,498.07 km) |
| Walnut Creek to Castle Rock (Colorado) | 931.66 mi (1,499.37 km) |
| Walnut Creek to Castro Valley (California) | 13.43 mi (21.62 km) |
| Walnut Creek to Catalina Foothills (Arizona) | 738.96 mi (1,189.24 km) |
| Walnut Creek to Cataño (Puerto Rico) | 3,601.17 mi (5,795.52 km) |
| Walnut Creek to Cathedral City (California) | 419.83 mi (675.65 km) |
| Walnut Creek to Catonsville (Maryland) | 2,422.51 mi (3,898.66 km) |
| Walnut Creek to Cave Spring (Virginia) | 2,282.71 mi (3,673.66 km) |
| Walnut Creek to Cayce (South Carolina) | 2,291.63 mi (3,688.02 km) |
| Walnut Creek to Cayey (Puerto Rico) | 3,612.68 mi (5,814.04 km) |
| Walnut Creek to Cedar City (Utah) | 488.40 mi (786.01 km) |
| Walnut Creek to Cedar Falls (Iowa) | 1,584.88 mi (2,550.62 km) |
| Walnut Creek to Cedar Hill (Texas) | 1,457.37 mi (2,345.41 km) |
| Walnut Creek to Cedar Lake (Indiana) | 1,844.25 mi (2,968.04 km) |
| Walnut Creek to Cedar Mill (Oregon) | 528.85 mi (851.10 km) |
