Here's the list for the matches on the front range. I realize that this thread is a few weeks old, but hopefully it helps.
IPSC/USPSA 1st Sunday, Aurora 1st Monday, Colorado Springs (indoor) 2nd Saturday, Colorado Rifle Club (north of Byers CO) 2nd Sunday, Pueblo 3rd Saturday, Ben Lomand (just south of Kiowa CO) 3rd Sunday, Weld County (Greely CO) 4th Saturday, Aurora 4th Sunday, Clear Creek (in the foothills west of Denver) 5th Sunday, Boulder
There is also a steel match every Friday evening just east of the Colorado Springs airport.