| Walnut Creek to Camarillo (California) | 304.67 mi (490.32 km) |
| Walnut Creek to Camas (Washington) | 532.27 mi (856.60 km) |
| Walnut Creek to Cambridge (Maryland) | 2,468.45 mi (3,972.58 km) |
| Walnut Creek to Cambridge (Massachusetts) | 2,667.12 mi (4,292.31 km) |
| Walnut Creek to Camden (Arkansas) | 1,657.45 mi (2,667.41 km) |
| Walnut Creek to Camden (New Jersey) | 2,497.60 mi (4,019.50 km) |
| Walnut Creek to Cameron Park (California) | 78.10 mi (125.69 km) |
| Walnut Creek to Camp Pendleton South (California) | 414.96 mi (667.81 km) |
| Walnut Creek to Camp Springs (Maryland) | 2,420.25 mi (3,895.01 km) |
| Walnut Creek to Camp Verde (Arizona) | 612.07 mi (985.02 km) |
| Walnut Creek to Campbell (California) | 43.25 mi (69.60 km) |
| Walnut Creek to Campbellsville (Kentucky) | 1,995.04 mi (3,210.70 km) |
| Walnut Creek to Campton Hills (Illinois) | 1,791.63 mi (2,883.35 km) |
| Walnut Creek to Canby (Oregon) | 509.81 mi (820.46 km) |
| Walnut Creek to Candelaria (Puerto Rico) | 3,598.47 mi (5,791.19 km) |
