| Rhyl to Orangevale (California) | 5,077.25 mi (8,171.05 km) |
| Rhyl to Orchards (Washington) | 4,712.64 mi (7,584.26 km) |
| Rhyl to Orcutt (California) | 5,273.40 mi (8,486.72 km) |
| Rhyl to Oregon (Ohio) | 3,616.80 mi (5,820.67 km) |
| Rhyl to Oregon (Wisconsin) | 3,781.64 mi (6,085.96 km) |
| Rhyl to Oregon City (Oregon) | 4,734.17 mi (7,618.90 km) |
| Rhyl to Orem (Utah) | 4,691.27 mi (7,549.88 km) |
| Rhyl to Orinda (California) | 5,152.38 mi (8,291.95 km) |
| Rhyl to Orland Park (Illinois) | 3,787.11 mi (6,094.76 km) |
| Rhyl to Orlando (Florida) | 4,178.22 mi (6,724.20 km) |
| Rhyl to Ormond Beach (Florida) | 4,126.67 mi (6,641.24 km) |
| Rhyl to Oro Valley (Arizona) | 5,101.61 mi (8,210.24 km) |
| Rhyl to Oroville (California) | 5,040.58 mi (8,112.04 km) |
| Rhyl to Oshkosh (Wisconsin) | 3,699.73 mi (5,954.15 km) |
| Rhyl to Oskaloosa (Iowa) | 3,979.84 mi (6,404.94 km) |
