| Walnut Creek to Clarksdale (Mississippi) | 1,768.14 mi (2,845.54 km) |
| Walnut Creek to Clarkston (Georgia) | 2,120.95 mi (3,413.34 km) |
| Walnut Creek to Clarksville (Indiana) | 1,959.25 mi (3,153.11 km) |
| Walnut Creek to Clarksville (Tennessee) | 1,899.93 mi (3,057.64 km) |
| Walnut Creek to Clawson (Michigan) | 2,058.19 mi (3,312.33 km) |
| Walnut Creek to Clay (Alabama) | 1,994.61 mi (3,210.01 km) |
| Walnut Creek to Clayton (California) | 6.54 mi (10.52 km) |
| Walnut Creek to Clayton (Missouri) | 1,712.18 mi (2,755.48 km) |
| Walnut Creek to Clayton (North Carolina) | 2,395.24 mi (3,854.77 km) |
| Walnut Creek to Clayton (Ohio) | 2,017.67 mi (3,247.13 km) |
| Walnut Creek to Clearfield (Utah) | 577.51 mi (929.41 km) |
| Walnut Creek to Clearlake (California) | 79.74 mi (128.33 km) |
| Walnut Creek to Clearwater (Florida) | 2,359.22 mi (3,796.79 km) |
| Walnut Creek to Cleburne (Texas) | 1,438.52 mi (2,315.08 km) |
| Walnut Creek to Clemmons (North Carolina) | 2,283.95 mi (3,675.65 km) |
