Colorado Statute of Limitations
C.R.S. 13-80-101 -General limitation of actions Three Years. (1) The following civil actions, regardless of the theory upon which suit is brought, or against whom suit is brought, shall be commenced within three years after the cause of action accrues, and not thereafter: (a) All contract actions, including personal contracts and actions under the ';Uniform Commercial Code';, except as otherwise provided in section C.R.S. 13-80-103.5;
C.R.S. 13-80-103.5 6 Years Written Contract: (signed promissory note)