Usually you wait until after the bar to get into your underwear, but not with the Cupid’s Undie Run.

The Cupid’s Undie Run is the world’s largest organized underwear run that combines a pre-run party, a one mile-ish run, an after party, and charity. The run raises money to support the Children’s Tumor Foundation and has raised nearly $8 million since 2010, when the run began.

This year, Sound Off Experience is donating all the components to create amazing silent discos in seven of the participating cities.

The Cupid’s Undie Run will happen all across the country (with three additional runs in Australia) on February 13th and 20th. So whether you’re looking to meet your sweetie, or donate to a good cause, you won’t want to miss this. Underwear required.