| Mason City to Dormagen | 4,359.28 mi (7,015.58 km) |
| Mason City to Dornstadt | 4,580.73 mi (7,371.97 km) |
| Mason City to Dorsten | 4,341.53 mi (6,987.01 km) |
| Mason City to Dortmund | 4,364.77 mi (7,024.41 km) |
| Mason City to Dorverden | 4,369.51 mi (7,032.05 km) |
| Mason City to Dossenheim | 4,493.48 mi (7,231.56 km) |
| Mason City to Dreieich | 4,471.06 mi (7,195.47 km) |
| Mason City to Drensteinfurt | 4,362.72 mi (7,021.12 km) |
| Mason City to Dresden | 4,596.95 mi (7,398.08 km) |
| Mason City to Drochtersen | 4,339.17 mi (6,983.21 km) |
| Mason City to Drolshagen | 4,395.13 mi (7,073.28 km) |
| Mason City to Duderstadt | 4,460.38 mi (7,178.28 km) |
| Mason City to Duisburg | 4,343.72 mi (6,990.53 km) |
| Mason City to Dulmen | 4,345.39 mi (6,993.22 km) |
| Mason City to Duren | 4,359.85 mi (7,016.49 km) |
