| Oristano to Portage (Michigan) | 4,634.61 mi (7,458.69 km) |
| Oristano to Portage (Wisconsin) | 4,743.25 mi (7,633.52 km) |
| Oristano to Portales (New Mexico) | 5,729.61 mi (9,220.91 km) |
| Oristano to Porterville (California) | 6,221.96 mi (10,013.28 km) |
| Oristano to Portland (Maine) | 3,912.02 mi (6,295.79 km) |
| Oristano to Portland (Oregon) | 5,807.36 mi (9,346.04 km) |
| Oristano to Portland (Tennessee) | 4,897.50 mi (7,881.77 km) |
| Oristano to Portland (Texas) | 5,765.42 mi (9,278.55 km) |
| Oristano to Portsmouth (New Hampshire) | 3,953.84 mi (6,363.09 km) |
| Oristano to Portsmouth (Ohio) | 4,651.53 mi (7,485.92 km) |
| Oristano to Portsmouth (Virginia) | 4,420.12 mi (7,113.49 km) |
| Oristano to Post Falls (Idaho) | 5,523.00 mi (8,888.41 km) |
| Oristano to Potomac (Maryland) | 4,381.01 mi (7,050.55 km) |
| Oristano to Potomac Park (California) | 6,258.06 mi (10,071.37 km) |
| Oristano to Pottstown (Pennsylvania) | 4,266.55 mi (6,866.35 km) |
