| Mason City to Darlaston | 3,987.62 mi (6,417.45 km) |
| Mason City to Darlington | 3,937.62 mi (6,336.99 km) |
| Mason City to Dartford | 4,110.55 mi (6,615.29 km) |
| Mason City to Darton | 3,970.73 mi (6,390.27 km) |
| Mason City to Darwen | 3,933.84 mi (6,330.91 km) |
| Mason City to Daventry | 4,030.65 mi (6,486.70 km) |
| Mason City to Davyhulme | 3,945.41 mi (6,349.52 km) |
| Mason City to Dawlish | 4,004.81 mi (6,445.11 km) |
| Mason City to Deal | 4,161.55 mi (6,697.37 km) |
| Mason City to Denby Dale | 3,966.83 mi (6,383.99 km) |
| Mason City to Denton | 3,954.57 mi (6,364.27 km) |
| Mason City to Derby | 3,995.85 mi (6,430.70 km) |
| Mason City to Derry | 3,718.29 mi (5,984.00 km) |
| Mason City to Desborough | 4,036.64 mi (6,496.34 km) |
| Mason City to Devizes | 4,032.42 mi (6,489.55 km) |
