Worldwide Charity Run Benefiting Major Non-Profit Needs Marketing Partner

We are looking to contract out all of our marketing, social media and PR which have thus far been handled in house but by one individual. We have grown and can now afford to do it right. We thrive on creativity and out-of-the-box thinking. We do most of our marketing on facebook currently. Planning to spend $200,000 or so. East Coast headquarters but events are worldwide and still growing.