The crimes were reported to the San Diego County Sheriff's Office Wednesday around 3:30 p.m.
Drivers reported that several cars were broken into in broad daylight while parked alongside State Route 67 near the entrance to the popular trail up to Potato Chip Rock. Shattered glass could be seen along the roadway.
"Three quarters of the way down the hike, a fellow hiker was like 'Yeah, a couple cars were broken into,'" said hiker Jonathan Graham. "He showed my dad the picture and was like, 'Yeah, it's that one. It's ours.'"
Some of the victims reported bags and purses stolen that included identification, credit cards, passports and nearly $1,000 cash.
Investigators have not made any arrests and there is not believed to be any surveillance video.
"That somebody would -- I don’t know -- take a baseball bat and bat in some windows -- who knows. It’s crazy," said Sue Graham.
Each of the targeted vehicles had a passenger side window smashed in.
Authorities left business cards on the windshield of cars along the route hoping anyone with information would come forward.