Distance between Boulder and Rock Island
Distance from Boulder, CO to Rock Island, IL is 775 miles / 1247 kilometers.
Map showing the distance from Boulder to Rock Island
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Air distance: | miles km |
Boulder, CO
| City: | Boulder, CO |
| Country: | United States |
Rock Island, IL
| City: | Rock Island, IL |
| Country: | United States |
Time difference between Boulder and Rock Island
The time difference between Boulder and Rock Island is 1 hour. Rock Island is 1 hour ahead of Boulder. Current local time in Boulder is 16:33 MST (2025-02-16) and time in Rock Island is 17:33 CST (2025-02-16).