| Portage to Johnstown (Pennsylvania) | 369.76 mi (595.06 km) |
| Portage to Joliet (Illinois) | 139.85 mi (225.07 km) |
| Portage to Jonesboro (Arkansas) | 518.29 mi (834.11 km) |
| Portage to Joplin (Missouri) | 591.21 mi (951.46 km) |
| Portage to Joppatowne (Maryland) | 519.64 mi (836.28 km) |
| Portage to Juana Díaz (Puerto Rico) | 2,010.54 mi (3,235.65 km) |
| Portage to Junction City (Kansas) | 629.35 mi (1,012.84 km) |
| Portage to Juneau (Alaska) | 2,350.52 mi (3,782.80 km) |
| Portage to Jupiter (Florida) | 1,100.15 mi (1,770.52 km) |
| Portage to Jupiter Farms (Florida) | 1,098.33 mi (1,767.59 km) |
| Portage to Jurupa Valley (California) | 1,811.32 mi (2,915.04 km) |
| Portage to Justice (Illinois) | 119.39 mi (192.13 km) |
| Portage to Kahului (Hawaii) | 4,298.62 mi (6,917.95 km) |
| Portage to Kailua (Hawaii) | 4,341.94 mi (6,987.67 km) |
| Portage to Kalamazoo (Michigan) | 5.18 mi (8.33 km) |
