| Darton to Odessa (Texas) | 4,885.14 mi (7,861.88 km) |
| Darton to Ogden (Utah) | 4,698.88 mi (7,562.11 km) |
| Darton to Oildale (California) | 5,246.01 mi (8,442.63 km) |
| Darton to Ojus (Florida) | 4,337.42 mi (6,980.41 km) |
| Darton to Okemos (Michigan) | 3,671.62 mi (5,908.90 km) |
| Darton to Oklahoma City (Oklahoma) | 4,517.47 mi (7,270.16 km) |
| Darton to Okmulgee (Oklahoma) | 4,454.54 mi (7,168.90 km) |
| Darton to Olathe (Kansas) | 4,242.45 mi (6,827.57 km) |
| Darton to Old Jamestown (Missouri) | 4,077.82 mi (6,562.62 km) |
| Darton to Oldsmar (Florida) | 4,329.94 mi (6,968.37 km) |
| Darton to Olean (New York) | 3,473.21 mi (5,589.60 km) |
| Darton to Olive Branch (Mississippi) | 4,256.97 mi (6,850.94 km) |
| Darton to Olivehurst (California) | 5,108.41 mi (8,221.19 km) |
| Darton to Olney (Maryland) | 3,555.84 mi (5,722.57 km) |
| Darton to Olympia (Washington) | 4,682.13 mi (7,535.17 km) |
