NEW YORK, Jan. 13, 2015 /PRNewswire/ -- Today, Tough Mudder debuts the highlights for their 2015 event season, which will include the launch of all-new obstacles, new corporate partnerships, international expansion into Mexico and the launch of a brand extension dubbed "Urban Mudder." As the endurance series approaches its two millionth participant, these initiatives expand its position as the world's largest event of its kind.