Distance between Sumter and Duncan
Distance from Sumter, SC to Duncan, OK is 1006 miles / 1619 kilometers.
Map showing the distance from Sumter to Duncan
 |
Air distance: | miles km |
Sumter, SC
| City: | Sumter, SC |
| Country: | United States |
Duncan, OK
| City: | Duncan, OK |
| Country: | United States |
Time difference between Sumter and Duncan
The time difference between Sumter and Duncan is 1 hour. Duncan is 1 hour behind Sumter. Current local time in Sumter is 10:39 EST (2025-01-23) and time in Duncan is 09:39 CST (2025-01-23).