| Mason City to Dewsbury | 3,963.49 mi (6,378.63 km) |
| Mason City to Deysbrook | 3,926.06 mi (6,318.39 km) |
| Mason City to Didcot | 4,051.13 mi (6,519.67 km) |
| Mason City to Dingle | 3,926.83 mi (6,319.62 km) |
| Mason City to Dinnington | 3,990.14 mi (6,421.51 km) |
| Mason City to Dodworth | 3,972.62 mi (6,393.32 km) |
| Mason City to Dollis Hill | 4,089.45 mi (6,581.33 km) |
| Mason City to Doncaster | 3,987.01 mi (6,416.48 km) |
| Mason City to Dorchester | 4,038.75 mi (6,499.74 km) |
| Mason City to Dorking | 4,098.07 mi (6,595.21 km) |
| Mason City to Dorridge | 4,005.12 mi (6,445.61 km) |
| Mason City to Dover | 4,161.74 mi (6,697.67 km) |
| Mason City to Downham Market | 4,074.14 mi (6,556.69 km) |
| Mason City to Droitwich | 3,994.34 mi (6,428.27 km) |
| Mason City to Dronfield | 3,982.90 mi (6,409.86 km) |
