| Walnut Creek to Cordele (Georgia) | 2,190.75 mi (3,525.67 km) |
| Walnut Creek to Corinth (Mississippi) | 1,864.94 mi (3,001.34 km) |
| Walnut Creek to Corinth (Texas) | 1,437.54 mi (2,313.50 km) |
| Walnut Creek to Cornelius (North Carolina) | 2,268.16 mi (3,650.25 km) |
| Walnut Creek to Cornelius (Oregon) | 528.81 mi (851.03 km) |
| Walnut Creek to Corning (New York) | 2,370.43 mi (3,814.83 km) |
| Walnut Creek to Corona (California) | 375.00 mi (603.51 km) |
| Walnut Creek to Coronado (California) | 454.47 mi (731.41 km) |
| Walnut Creek to Corpus Christi (Texas) | 1,588.69 mi (2,556.74 km) |
| Walnut Creek to Corsicana (Texas) | 1,497.01 mi (2,409.20 km) |
| Walnut Creek to Cortland (New York) | 2,410.33 mi (3,879.05 km) |
| Walnut Creek to Corvallis (Oregon) | 465.13 mi (748.55 km) |
| Walnut Creek to Coshocton (Ohio) | 2,143.32 mi (3,449.34 km) |
| Walnut Creek to Costa Mesa (California) | 372.92 mi (600.16 km) |
| Walnut Creek to Coto de Caza (California) | 388.36 mi (625.01 km) |
