| Walnut Creek to Somerset (New Jersey) | 2,520.67 mi (4,056.63 km) |
| Walnut Creek to Somersworth (New Hampshire) | 2,667.70 mi (4,293.25 km) |
| Walnut Creek to Somerton (Arizona) | 552.58 mi (889.29 km) |
| Walnut Creek to Somerville (Massachusetts) | 2,667.78 mi (4,293.37 km) |
| Walnut Creek to Somerville (New Jersey) | 2,514.25 mi (4,046.30 km) |
| Walnut Creek to Sonoma (California) | 35.20 mi (56.65 km) |
| Walnut Creek to Soquel (California) | 62.70 mi (100.91 km) |
| Walnut Creek to South Bend (Indiana) | 1,903.08 mi (3,062.71 km) |
| Walnut Creek to South Bradenton (Florida) | 2,385.49 mi (3,839.07 km) |
| Walnut Creek to South Burlington (Vermont) | 2,540.23 mi (4,088.11 km) |
| Walnut Creek to South Charleston (West Virginia) | 2,174.30 mi (3,499.20 km) |
| Walnut Creek to South Daytona (Florida) | 2,418.51 mi (3,892.22 km) |
| Walnut Creek to South El Monte (California) | 347.32 mi (558.96 km) |
| Walnut Creek to South Elgin (Illinois) | 1,796.81 mi (2,891.69 km) |
| Walnut Creek to South Euclid (Ohio) | 2,148.09 mi (3,457.02 km) |
