| Portchester to Orangevale (California) | 5,269.15 mi (8,479.87 km) |
| Portchester to Orchards (Washington) | 4,908.18 mi (7,898.95 km) |
| Portchester to Orcutt (California) | 5,462.67 mi (8,791.32 km) |
| Portchester to Oregon (Ohio) | 3,776.47 mi (6,077.64 km) |
| Portchester to Oregon (Wisconsin) | 3,950.52 mi (6,357.74 km) |
| Portchester to Oregon City (Oregon) | 4,929.61 mi (7,933.44 km) |
| Portchester to Orem (Utah) | 4,877.75 mi (7,849.98 km) |
| Portchester to Orinda (California) | 5,344.43 mi (8,601.03 km) |
| Portchester to Orland Park (Illinois) | 3,952.06 mi (6,360.23 km) |
| Portchester to Orlando (Florida) | 4,308.11 mi (6,933.24 km) |
| Portchester to Ormond Beach (Florida) | 4,257.81 mi (6,852.28 km) |
| Portchester to Oro Valley (Arizona) | 5,280.67 mi (8,498.42 km) |
| Portchester to Oroville (California) | 5,233.08 mi (8,421.82 km) |
| Portchester to Oshkosh (Wisconsin) | 3,869.52 mi (6,227.40 km) |
| Portchester to Oskaloosa (Iowa) | 4,149.70 mi (6,678.30 km) |
