| Walnut Creek to Portage (Indiana) | 1,856.62 mi (2,987.94 km) |
| Walnut Creek to Portage (Michigan) | 1,935.50 mi (3,114.88 km) |
| Walnut Creek to Portage (Wisconsin) | 1,737.81 mi (2,796.74 km) |
| Walnut Creek to Portales (New Mexico) | 1,073.11 mi (1,727.00 km) |
| Walnut Creek to Porterville (California) | 208.92 mi (336.23 km) |
| Walnut Creek to Portland (Maine) | 2,693.00 mi (4,333.97 km) |
| Walnut Creek to Portland (Oregon) | 528.44 mi (850.44 km) |
| Walnut Creek to Portland (Tennessee) | 1,943.67 mi (3,128.03 km) |
| Walnut Creek to Portland (Texas) | 1,584.97 mi (2,550.76 km) |
| Walnut Creek to Portsmouth (New Hampshire) | 2,675.19 mi (4,305.30 km) |
| Walnut Creek to Portsmouth (Ohio) | 2,103.57 mi (3,385.37 km) |
| Walnut Creek to Portsmouth (Virginia) | 2,484.04 mi (3,997.67 km) |
| Walnut Creek to Post Falls (Idaho) | 725.61 mi (1,167.76 km) |
| Walnut Creek to Potomac (Maryland) | 2,402.65 mi (3,866.69 km) |
| Walnut Creek to Potomac Park (California) | 244.58 mi (393.62 km) |
