The actress and her pal Courtney are set to run the 13-mile (21-kilometre) Napa to Sonoma Wine Country Half Marathon in California on 19 July (15) as part of their fundraising campaign Sprint Away Silence, which raises awareness and money for The Rape Foundation, a care centre in Santa Monica.

On their donation page, Behrs writes, "The Rape foundation brings state of the art, comprehensive, free, care to rape victims and sexually abused children. Unfortunately, I know the rape treatment center firsthand. A dear friend of mine was sexually assaulted in college. When she told me the morning after, I frantically googled what to do. The first thing that came up was the Rape Treatment Center in Santa Monica. We still, to this day, call the the staff there our 'angels'. We could not have been more loved, welcomed, taken care of and supported in what was most certainly the most terrifying morning of my friend's life."

Behrs vows to post regular videos and pictures to update fans of her training progress. Her co-star Kat Dennings has encouraged her followers to donate to the campaign, which has a $15,000 (£9,400) goal.