| Mason City to Droylsden | 3,951.99 mi (6,360.11 km) |
| Mason City to Dudley | 3,988.24 mi (6,418.45 km) |
| Mason City to Dukinfield | 3,954.99 mi (6,364.93 km) |
| Mason City to Dumbarton | 3,786.54 mi (6,093.85 km) |
| Mason City to Dumfries | 3,847.99 mi (6,192.74 km) |
| Mason City to Dunbar | 3,855.18 mi (6,204.31 km) |
| Mason City to Dunblane | 3,799.83 mi (6,115.24 km) |
| Mason City to Dundee | 3,824.96 mi (6,155.67 km) |
| Mason City to Dunfermline | 3,821.45 mi (6,150.03 km) |
| Mason City to Dunstable | 4,067.29 mi (6,545.67 km) |
| Mason City to Durham | 3,928.43 mi (6,322.19 km) |
| Mason City to Ealing | 4,088.79 mi (6,580.28 km) |
| Mason City to Earlestown | 3,935.53 mi (6,333.63 km) |
| Mason City to Earley | 4,068.67 mi (6,547.89 km) |
| Mason City to East Barnet | 4,089.15 mi (6,580.85 km) |
