Distance between Rapid City and Johnston
Distance from Rapid City, SD to Johnston, IA is 510 miles / 821 kilometers.
Map showing the distance from Rapid City to Johnston
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Air distance: | miles km |
Rapid City, SD
| City: | Rapid City, SD |
| Country: | United States |
Johnston, IA
| City: | Johnston, IA |
| Country: | United States |
Time difference between Rapid City and Johnston
The time difference between Rapid City and Johnston is 1 hour. Johnston is 1 hour ahead of Rapid City. Current local time in Rapid City is 14:53 MST (2025-01-21) and time in Johnston is 15:53 CST (2025-01-21).