| Walnut Creek to Rockport (Texas) | 1,593.27 mi (2,564.12 km) |
| Walnut Creek to Rockville (Maryland) | 2,403.64 mi (3,868.29 km) |
| Walnut Creek to Rockville Centre (New York) | 2,562.77 mi (4,124.37 km) |
| Walnut Creek to Rockwall (Texas) | 1,477.25 mi (2,377.41 km) |
| Walnut Creek to Rocky Mount (North Carolina) | 2,423.69 mi (3,900.55 km) |
| Walnut Creek to Rocky Point (New York) | 2,594.82 mi (4,175.96 km) |
| Walnut Creek to Rocky River (Ohio) | 2,131.69 mi (3,430.62 km) |
| Walnut Creek to Roessleville (New York) | 2,529.01 mi (4,070.05 km) |
| Walnut Creek to Rogers (Arkansas) | 1,534.76 mi (2,469.96 km) |
| Walnut Creek to Rogers (Minnesota) | 1,545.94 mi (2,487.96 km) |
| Walnut Creek to Rohnert Park (California) | 47.13 mi (75.85 km) |
| Walnut Creek to Rolla (Missouri) | 1,642.92 mi (2,644.03 km) |
| Walnut Creek to Rolling Meadows (Illinois) | 1,811.36 mi (2,915.10 km) |
| Walnut Creek to Roma (Texas) | 1,557.13 mi (2,505.96 km) |
| Walnut Creek to Rome (Georgia) | 2,059.68 mi (3,314.73 km) |
