Rescuers spotted them Tuesday morning in the Devil's Canyon area near Angeles Crest Highway. They were not injured.
The three men set out on a 15-mile hike in an area that has very rugged terrain, and they were supposed to be home around 5 p.m. Monday.
When they didn't return, the family of one of the hikers notified the sheriff's department.
Search crews worked on the ground and in the air to find the men.