| Portage to Romeoville (Illinois) | 134.84 mi (217.00 km) |
| Portage to Romulus (Michigan) | 113.85 mi (183.23 km) |
| Portage to Ronkonkoma (New York) | 651.64 mi (1,048.71 km) |
| Portage to Roosevelt (New York) | 630.16 mi (1,014.15 km) |
| Portage to Rosamond (California) | 1,822.26 mi (2,932.64 km) |
| Portage to Rosaryville (Maryland) | 517.69 mi (833.13 km) |
| Portage to Roscoe (Illinois) | 175.31 mi (282.13 km) |
| Portage to Rose Hill (Virginia) | 503.88 mi (810.92 km) |
| Portage to Roseburg (Oregon) | 1,902.00 mi (3,060.97 km) |
| Portage to Rosedale (California) | 1,857.29 mi (2,989.02 km) |
| Portage to Rosedale (Maryland) | 514.74 mi (828.40 km) |
| Portage to Roselle (Illinois) | 128.84 mi (207.35 km) |
| Portage to Roselle (New Jersey) | 596.19 mi (959.47 km) |
| Portage to Roselle Park (New Jersey) | 595.64 mi (958.59 km) |
| Portage to Rosemead (California) | 1,840.21 mi (2,961.53 km) |
