| Grass Valley to Portage (Michigan) | 1,855.11 mi (2,985.51 km) |
| Grass Valley to Portage (Wisconsin) | 1,654.10 mi (2,662.02 km) |
| Grass Valley to Portales (New Mexico) | 1,038.39 mi (1,671.13 km) |
| Grass Valley to Porterville (California) | 244.62 mi (393.68 km) |
| Grass Valley to Portland (Maine) | 2,606.52 mi (4,194.80 km) |
| Grass Valley to Portland (Oregon) | 443.74 mi (714.13 km) |
| Grass Valley to Portland (Tennessee) | 1,879.66 mi (3,025.02 km) |
| Grass Valley to Portland (Texas) | 1,567.24 mi (2,522.24 km) |
| Grass Valley to Portsmouth (New Hampshire) | 2,589.89 mi (4,168.02 km) |
| Grass Valley to Portsmouth (Ohio) | 2,031.48 mi (3,269.35 km) |
| Grass Valley to Portsmouth (Virginia) | 2,413.32 mi (3,883.86 km) |
| Grass Valley to Post Falls (Idaho) | 622.06 mi (1,001.11 km) |
| Grass Valley to Potomac (Maryland) | 2,327.45 mi (3,745.67 km) |
| Grass Valley to Potomac Park (California) | 290.32 mi (467.22 km) |
| Grass Valley to Pottstown (Pennsylvania) | 2,386.84 mi (3,841.25 km) |
