| Walnut Creek to Kalispell (Montana) | 811.01 mi (1,305.19 km) |
| Walnut Creek to Kaneohe (Hawaii) | 2,409.55 mi (3,877.80 km) |
| Walnut Creek to Kankakee (Illinois) | 1,823.56 mi (2,934.74 km) |
| Walnut Creek to Kannapolis (North Carolina) | 2,281.04 mi (3,670.98 km) |
| Walnut Creek to Kansas City (Kansas) | 1,472.55 mi (2,369.83 km) |
| Walnut Creek to Kansas City (Missouri) | 1,482.69 mi (2,386.16 km) |
| Walnut Creek to Kapaa (Hawaii) | 2,463.58 mi (3,964.74 km) |
| Walnut Creek to Kapolei (Hawaii) | 2,426.65 mi (3,905.32 km) |
| Walnut Creek to Katy (Texas) | 1,598.14 mi (2,571.96 km) |
| Walnut Creek to Kaukauna (Wisconsin) | 1,799.39 mi (2,895.84 km) |
| Walnut Creek to Kaysville (Utah) | 579.70 mi (932.94 km) |
| Walnut Creek to Kearney (Missouri) | 1,491.59 mi (2,400.48 km) |
| Walnut Creek to Kearney (Nebraska) | 1,238.89 mi (1,993.80 km) |
| Walnut Creek to Kearns (Utah) | 568.71 mi (915.25 km) |
| Walnut Creek to Kearny (New Jersey) | 2,536.81 mi (4,082.60 km) |
