| Darton to Orangevale (California) | 5,121.58 mi (8,242.39 km) |
| Darton to Orchards (Washington) | 4,750.87 mi (7,645.78 km) |
| Darton to Orcutt (California) | 5,320.94 mi (8,563.22 km) |
| Darton to Oregon (Ohio) | 3,684.09 mi (5,928.97 km) |
| Darton to Oregon (Wisconsin) | 3,844.70 mi (6,187.44 km) |
| Darton to Oregon City (Oregon) | 4,772.61 mi (7,680.77 km) |
| Darton to Orem (Utah) | 4,741.89 mi (7,631.33 km) |
| Darton to Orinda (California) | 5,196.46 mi (8,362.89 km) |
| Darton to Orland Park (Illinois) | 3,852.06 mi (6,199.29 km) |
| Darton to Orlando (Florida) | 4,254.14 mi (6,846.37 km) |
| Darton to Ormond Beach (Florida) | 4,202.34 mi (6,763.01 km) |
| Darton to Oro Valley (Arizona) | 5,158.14 mi (8,301.22 km) |
| Darton to Oroville (California) | 5,084.07 mi (8,182.02 km) |
| Darton to Oshkosh (Wisconsin) | 3,762.35 mi (6,054.91 km) |
| Darton to Oskaloosa (Iowa) | 4,042.31 mi (6,505.47 km) |
