MJP –
In a unique collaboration, In-N-Out Burger is partnering with Tough Mudder for a custom endurance event benefiting the Slave 2 Nothing Foundation.
The event will take place from September 5-7, 2025, at Big Bear Mountain Resort in California.
Starting with exclusive waves for In-N-Out Associates, friends, and family on September 5, the event will open to the public from the afternoon of September 5 through September 7.
Over 15,000 participants are expected to attend, tackling 5K and 10K obstacle courses set against stunning mountain scenery.
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All ticket sales from Friday will benefit the Slave 2 Nothing Foundation, which fights addiction and human trafficking.
In-N-Out will also offer free burgers to participants from its on-site cookout trucks, and finishers will receive custom headbands, tees, and medals.
In-N-Out President Lynsi Snyder-Ellingson, a Tough Mudder participant herself, expressed excitement about the partnership and the opportunity to further the Foundation’s mission.
