| Walnut Creek to Conyers (Georgia) | 2,137.48 mi (3,439.95 km) |
| Walnut Creek to Cookeville (Tennessee) | 2,005.79 mi (3,228.00 km) |
| Walnut Creek to Coolidge (Arizona) | 683.63 mi (1,100.20 km) |
| Walnut Creek to Coon Rapids (Minnesota) | 1,558.77 mi (2,508.60 km) |
| Walnut Creek to Cooper City (Florida) | 2,556.61 mi (4,114.47 km) |
| Walnut Creek to Coos Bay (Oregon) | 395.43 mi (636.39 km) |
| Walnut Creek to Copiague (New York) | 2,575.29 mi (4,144.53 km) |
| Walnut Creek to Coppell (Texas) | 1,446.12 mi (2,327.30 km) |
| Walnut Creek to Copperas Cove (Texas) | 1,446.38 mi (2,327.73 km) |
| Walnut Creek to Coral Gables (Florida) | 2,569.02 mi (4,134.44 km) |
| Walnut Creek to Coral Springs (Florida) | 2,550.57 mi (4,104.75 km) |
| Walnut Creek to Coral Terrace (Florida) | 2,565.76 mi (4,129.19 km) |
| Walnut Creek to Coralville (Iowa) | 1,628.45 mi (2,620.73 km) |
| Walnut Creek to Coram (New York) | 2,592.04 mi (4,171.49 km) |
| Walnut Creek to Corcoran (California) | 185.71 mi (298.87 km) |
