| Mill Valley to Portage (Michigan) | 1,961.00 mi (3,155.92 km) |
| Mill Valley to Portage (Wisconsin) | 1,762.78 mi (2,836.93 km) |
| Mill Valley to Portales (New Mexico) | 1,100.28 mi (1,770.73 km) |
| Mill Valley to Porterville (California) | 231.77 mi (372.99 km) |
| Mill Valley to Portland (Maine) | 2,717.54 mi (4,373.46 km) |
| Mill Valley to Portland (Oregon) | 527.11 mi (848.30 km) |
| Mill Valley to Portland (Tennessee) | 1,970.68 mi (3,171.51 km) |
| Mill Valley to Portland (Texas) | 1,611.10 mi (2,592.81 km) |
| Mill Valley to Portsmouth (New Hampshire) | 2,699.95 mi (4,345.14 km) |
| Mill Valley to Portsmouth (Ohio) | 2,130.03 mi (3,427.95 km) |
| Mill Valley to Portsmouth (Virginia) | 2,510.64 mi (4,040.48 km) |
| Mill Valley to Post Falls (Idaho) | 734.58 mi (1,182.19 km) |
| Mill Valley to Potomac (Maryland) | 2,428.82 mi (3,908.81 km) |
| Mill Valley to Potomac Park (California) | 265.01 mi (426.50 km) |
| Mill Valley to Pottstown (Pennsylvania) | 2,491.12 mi (4,009.08 km) |
