If such right or title first accrued to an ancestor, predecessor, or grantor of the person who brings the action or to any person from, by, or under whom he claims, the eighteen years shall be computed from the time when the right or title so accrued.
C.R.S. § 38-41-102
How computed
Digitized from: Public.Law — Colorado Revised Statutes. Reproduced from public-domain Colorado statutes; confirm against the official source for the current text. Not legal advice.