BLOOMINGTON, IN (WTHR/CNN) - Indiana college student Lauren Spierer vanished three weeks ago after a night out with friends and despite thousands of tips and countless searches, there's still no sign of her.
Hundreds of people turned out to look for the missing woman on what's being called "Find Lauren Day," deep in the woods of Brown County.
"They told us to be on the lookout for anything she might have been wearing," search volunteer Megan Sharkey said.
Volunteers searched 20 miles from where Spierer was last seen.
"She had black leggings and a white v-neck," Sharkey said.
Spierer's parents were among the first to head out on Find Lauren Day, which culminates three weeks of searching ever since the sophomore went missing on June 3.
"These parents deserve to know where their daughter is and we can't imagine what they're going through so we wanted to come be a part of the search today," a volunteer said.
It's not the largest search effort, but it may be the most concentrated and intense. And volunteers said it's not the last time they'll be out looking for Spierer.
"We'll keep going as long as we have the resources and as long as we can keep pushing, as long as we're having volunteers. There's a group of us that have kind of vowed to see this thing through to the end," John Summerlot, the search coordinator, said.
Despite not having any firm leads or suspects, Bloomington police have also said they are committed to solving the mystery.
"I am confident that something will happen on this case. And our hope is that we will have information as to what led to Lauren's disappearance, as well as any circumstances that may be related to that," Captain Joe Qualters with the Bloomington Police said.
Until that happens, the search continues.
Spierer's family is offering a $100,000 reward for information leading to her recovery.