Today, Tough Mudder announced a multi-year partnership with Team Rubicon, the only nonprofit disaster response organization that mobilizes military veterans to support communities devastated by natural disasters. The comprehensive charity partnership aims to raise $1.5 million by year-end 2017 – one of the largest monetary donations in Team Rubicon's six-year history – and to drive volunteer participation across the nation by activating Tough Mudder's passionate community of 2.5 million veterans and civilians.