| Dartford to Oakley (California) | 5,333.62 mi (8,583.64 km) |
| Dartford to Oakton (Virginia) | 3,691.91 mi (5,941.55 km) |
| Dartford to Oakville (Missouri) | 4,229.10 mi (6,806.09 km) |
| Dartford to Oatfield (Oregon) | 4,929.91 mi (7,933.92 km) |
| Dartford to Ocala (Florida) | 4,355.17 mi (7,008.98 km) |
| Dartford to Ocean Acres (New Jersey) | 3,530.37 mi (5,681.58 km) |
| Dartford to Ocean City (New Jersey) | 3,564.51 mi (5,736.52 km) |
| Dartford to Ocean Pines (Maryland) | 3,626.35 mi (5,836.05 km) |
| Dartford to Ocean Pointe (Hawaii) | 7,239.65 mi (11,651.10 km) |
| Dartford to Ocean Springs (Mississippi) | 4,567.17 mi (7,350.15 km) |
| Dartford to Oceanside (California) | 5,471.91 mi (8,806.18 km) |
| Dartford to Oceanside (New York) | 3,465.21 mi (5,576.71 km) |
| Dartford to Ocoee (Florida) | 4,359.11 mi (7,015.32 km) |
| Dartford to Oconomowoc (Wisconsin) | 3,939.00 mi (6,339.21 km) |
| Dartford to Odenton (Maryland) | 3,659.14 mi (5,888.82 km) |
