It runs from an intersection with U.S. Highway 285 (US 285) in La Jara southeast to the community of Sanford.

SH 136 begins in the west at US 285 and Main Street in La Jara and proceeds east to Sanford where the route turns abruptly south shortly before reaching its eastern end at an intersection with Ivy Street in Sanford.

The roadway continues southward after the route's terminus, as Main Street.

The route was paved to its current terminus by 1939, and the rest of the road was deleted in 1954, leaving what it is today.

Media related to Colorado State Highway 136 at Wikimedia Commons