| Opfikon to Portage (Michigan) | 4,333.32 mi (6,973.80 km) |
| Opfikon to Portage (Wisconsin) | 4,419.58 mi (7,112.63 km) |
| Opfikon to Portales (New Mexico) | 5,402.04 mi (8,693.74 km) |
| Opfikon to Porterville (California) | 5,822.14 mi (9,369.83 km) |
| Opfikon to Portland (Maine) | 3,654.46 mi (5,881.29 km) |
| Opfikon to Portland (Oregon) | 5,366.91 mi (8,637.21 km) |
| Opfikon to Portland (Tennessee) | 4,628.78 mi (7,449.30 km) |
| Opfikon to Portland (Texas) | 5,498.59 mi (8,849.12 km) |
| Opfikon to Portsmouth (New Hampshire) | 3,699.66 mi (5,954.03 km) |
| Opfikon to Portsmouth (Ohio) | 4,383.38 mi (7,054.36 km) |
| Opfikon to Portsmouth (Virginia) | 4,193.06 mi (6,748.07 km) |
| Opfikon to Post Falls (Idaho) | 5,092.37 mi (8,195.37 km) |
| Opfikon to Potomac (Maryland) | 4,134.25 mi (6,653.44 km) |
| Opfikon to Potomac Park (California) | 5,860.86 mi (9,432.14 km) |
| Opfikon to Pottstown (Pennsylvania) | 4,016.62 mi (6,464.13 km) |
