| River Ridge to Orangeburg (South Carolina) | 601.13 mi (967.42 km) |
| River Ridge to Orangevale (California) | 1,858.40 mi (2,990.81 km) |
| River Ridge to Orchards (Washington) | 2,050.38 mi (3,299.77 km) |
| River Ridge to Orcutt (California) | 1,786.95 mi (2,875.82 km) |
| River Ridge to Oregon (Ohio) | 892.22 mi (1,435.89 km) |
| River Ridge to Oregon (Wisconsin) | 897.04 mi (1,443.65 km) |
| River Ridge to Oregon City (Oregon) | 2,044.82 mi (3,290.83 km) |
| River Ridge to Orem (Utah) | 1,402.78 mi (2,257.55 km) |
| River Ridge to Orinda (California) | 1,901.79 mi (3,060.63 km) |
| River Ridge to Orland Park (Illinois) | 815.50 mi (1,312.42 km) |
| River Ridge to Orlando (Florida) | 545.22 mi (877.45 km) |
| River Ridge to Ormond Beach (Florida) | 549.42 mi (884.20 km) |
| River Ridge to Oro Valley (Arizona) | 1,236.57 mi (1,990.07 km) |
| River Ridge to Oroville (California) | 1,886.32 mi (3,035.74 km) |
| River Ridge to Oshkosh (Wisconsin) | 975.93 mi (1,570.60 km) |
