It's been a CSU tradition, a way for students to let off steam before finals and even donate to charity, but now college officials are trying to put a stop to the annual "Undie Run."
In a strongly worded email, CSU's Dean of Students Jody Donovan asks students not to participate, citing several concerns including safety, privacy, financial costs and lack of organization.
The event has grown over the last few years from an event for a few hundred, to thousands of people.
The email states organizers of this year's BARE (Body Acceptance Run Extravaganza) pulled out of the event because they were not able to get insurance. An official with the University said it does not support the run at all, saying there is "significant risk" to those who participate.
The annual event costs the university more than $15,000 for security and clean up, and the clothes that are "donated" by runners actually end up being thrown away. There is also significant worry about sexual and physical misconduct, according to the Dean's email.
Despite the warning, some students tell Denver7 they still plan to attend.
"To hear that it was taken advantage of in the past was a little sad," said Freshman Victoria Hoelscher, "but I don't know if it would discourage me from doing it."
The "Undie Run," or BARE, normally takes place the weekend before spring finals. That would be this weekend.
A previous organizer for the event tells Denver7 reporter Brendaliss Gonzalez this year's event, although carrying the same name, is not affiliated with the charity event from previous years.
A Facebook event post lists the run as scheduled for Friday at 8:30 p.m. It lists a disclaimer for students noting that the University's safety team advises students not to attend. It also clarifies that the event is no longer a clothing drive.
So far more than 1,000 people are signed up to attend.