| Richland to Orangeburg (South Carolina) | 2,193.70 mi (3,530.42 km) |
| Richland to Orangevale (California) | 533.78 mi (859.03 km) |
| Richland to Orchards (Washington) | 160.69 mi (258.61 km) |
| Richland to Orcutt (California) | 790.78 mi (1,272.64 km) |
| Richland to Oregon (Ohio) | 1,795.95 mi (2,890.30 km) |
| Richland to Oregon (Wisconsin) | 1,480.23 mi (2,382.19 km) |
| Richland to Oregon City (Oregon) | 171.62 mi (276.19 km) |
| Richland to Orem (Utah) | 562.37 mi (905.04 km) |
| Richland to Orinda (California) | 598.94 mi (963.90 km) |
| Richland to Orland Park (Illinois) | 1,585.69 mi (2,551.92 km) |
| Richland to Orlando (Florida) | 2,387.37 mi (3,842.10 km) |
| Richland to Ormond Beach (Florida) | 2,360.94 mi (3,799.57 km) |
| Richland to Oro Valley (Arizona) | 1,054.36 mi (1,696.83 km) |
| Richland to Oroville (California) | 482.44 mi (776.42 km) |
| Richland to Oshkosh (Wisconsin) | 1,496.09 mi (2,407.72 km) |
