| Roman to Portage (Michigan) | 5,024.88 mi (8,086.76 km) |
| Roman to Portage (Wisconsin) | 5,081.44 mi (8,177.79 km) |
| Roman to Portales (New Mexico) | 6,040.04 mi (9,720.51 km) |
| Roman to Porterville (California) | 6,326.87 mi (10,182.12 km) |
| Roman to Portland (Maine) | 4,403.41 mi (7,086.61 km) |
| Roman to Portland (Oregon) | 5,786.46 mi (9,312.40 km) |
| Roman to Portland (Tennessee) | 5,351.46 mi (8,612.34 km) |
| Roman to Portland (Texas) | 6,210.41 mi (9,994.68 km) |
| Roman to Portsmouth (New Hampshire) | 4,450.90 mi (7,163.04 km) |
| Roman to Portsmouth (Ohio) | 5,110.41 mi (8,224.42 km) |
| Roman to Portsmouth (Virginia) | 4,960.18 mi (7,982.64 km) |
| Roman to Post Falls (Idaho) | 5,544.33 mi (8,922.73 km) |
| Roman to Potomac (Maryland) | 4,885.42 mi (7,862.32 km) |
| Roman to Potomac Park (California) | 6,370.12 mi (10,251.72 km) |
| Roman to Pottstown (Pennsylvania) | 4,766.69 mi (7,671.24 km) |
