A number of the 140 homes evacuated by the 25 square mile Hayden Pass Fire are near where firefighters plan to conduct back burns in the next five or six days to contain the fire but that could be slowed by an increase in fire activity.
Kale Casey of the U.S. Forest Service said Friday residents have been told it could be a week or two before they can return.
Many were briefly allowed back to check on their homes Friday morning.
Elsewhere in Colorado, firefighters have been able to stop a wildfire south of Eagle at 20 acres. Near Durango, the 78-acre Black Ridge Fire has been 70 percent contained.