| Walnut Creek to Rome (New York) | 2,438.92 mi (3,925.07 km) |
| Walnut Creek to Romeoville (Illinois) | 1,808.99 mi (2,911.28 km) |
| Walnut Creek to Romulus (Michigan) | 2,048.93 mi (3,297.43 km) |
| Walnut Creek to Ronkonkoma (New York) | 2,587.08 mi (4,163.51 km) |
| Walnut Creek to Roosevelt (New York) | 2,565.35 mi (4,128.52 km) |
| Walnut Creek to Rosamond (California) | 298.73 mi (480.76 km) |
| Walnut Creek to Rosaryville (Maryland) | 2,425.74 mi (3,903.85 km) |
| Walnut Creek to Roscoe (Illinois) | 1,760.41 mi (2,833.10 km) |
| Walnut Creek to Rose Hill (Virginia) | 2,410.63 mi (3,879.54 km) |
| Walnut Creek to Roseburg (Oregon) | 374.01 mi (601.90 km) |
| Walnut Creek to Rosedale (California) | 234.18 mi (376.87 km) |
| Walnut Creek to Rosedale (Maryland) | 2,433.80 mi (3,916.83 km) |
| Walnut Creek to Roselle (Illinois) | 1,808.51 mi (2,910.51 km) |
| Walnut Creek to Roselle (New Jersey) | 2,531.04 mi (4,073.31 km) |
| Walnut Creek to Roselle Park (New Jersey) | 2,530.52 mi (4,072.47 km) |
