| Portage to National City (California) | 1,837.10 mi (2,956.52 km) |
| Portage to Naugatuck (Connecticut) | 646.67 mi (1,040.72 km) |
| Portage to Navarre (Florida) | 817.28 mi (1,315.29 km) |
| Portage to Nederland (Texas) | 965.51 mi (1,553.84 km) |
| Portage to Neenah (Wisconsin) | 199.00 mi (320.26 km) |
| Portage to Neosho (Missouri) | 596.27 mi (959.61 km) |
| Portage to Nesconset (New York) | 649.59 mi (1,045.41 km) |
| Portage to New Albany (Indiana) | 269.12 mi (433.11 km) |
| Portage to New Albany (Ohio) | 206.74 mi (332.72 km) |
| Portage to New Baltimore (Michigan) | 149.24 mi (240.18 km) |
| Portage to New Baltimore (Virginia) | 477.38 mi (768.27 km) |
| Portage to New Bedford (Massachusetts) | 752.84 mi (1,211.59 km) |
| Portage to New Berlin (Wisconsin) | 139.73 mi (224.87 km) |
| Portage to New Bern (North Carolina) | 671.79 mi (1,081.14 km) |
| Portage to New Braunfels (Texas) | 1,109.51 mi (1,785.58 km) |
