| Portage to Norton (Ohio) | 219.20 mi (352.76 km) |
| Portage to Norton Shores (Michigan) | 74.48 mi (119.86 km) |
| Portage to Norwalk (California) | 1,845.42 mi (2,969.91 km) |
| Portage to Norwalk (Connecticut) | 632.11 mi (1,017.27 km) |
| Portage to Norwalk (Iowa) | 419.67 mi (675.40 km) |
| Portage to Norwalk (Ohio) | 167.34 mi (269.30 km) |
| Portage to Norwich (Connecticut) | 695.38 mi (1,119.11 km) |
| Portage to Norwood (Ohio) | 218.29 mi (351.31 km) |
| Portage to Novato (California) | 1,957.39 mi (3,150.11 km) |
| Portage to Novi (Michigan) | 109.03 mi (175.46 km) |
| Portage to O'Fallon (Illinois) | 337.14 mi (542.58 km) |
| Portage to O'Fallon (Missouri) | 357.99 mi (576.13 km) |
| Portage to Oak Creek (Wisconsin) | 126.65 mi (203.83 km) |
| Portage to Oak Forest (Illinois) | 118.53 mi (190.75 km) |
| Portage to Oak Grove (Oregon) | 1,843.91 mi (2,967.49 km) |
