| Portage to River Ridge (Louisiana) | 884.00 mi (1,422.66 km) |
| Portage to Riverbank (California) | 1,883.72 mi (3,031.56 km) |
| Portage to Riverdale (Georgia) | 600.14 mi (965.83 km) |
| Portage to Riverdale (Illinois) | 111.97 mi (180.20 km) |
| Portage to Riverside (California) | 1,809.50 mi (2,912.11 km) |
| Portage to Riverside (Ohio) | 183.69 mi (295.62 km) |
| Portage to Riverton (Utah) | 1,367.17 mi (2,200.25 km) |
| Portage to Riverton (Wyoming) | 1,158.29 mi (1,864.09 km) |
| Portage to Riverview (Florida) | 1,010.43 mi (1,626.13 km) |
| Portage to Riverview (Michigan) | 122.68 mi (197.43 km) |
| Portage to Riviera Beach (Florida) | 1,110.02 mi (1,786.41 km) |
| Portage to Riviera Beach (Maryland) | 518.92 mi (835.12 km) |
| Portage to Roanoke (Virginia) | 452.75 mi (728.63 km) |
| Portage to Roanoke Rapids (North Carolina) | 581.13 mi (935.23 km) |
| Portage to Robbinsdale (Minnesota) | 433.50 mi (697.65 km) |
