Several additional celebrities are joining in the fun of the 20th anniversary Walt Disney World Marathon Weekend presented by Cigna.  Comedian and The Price Is Right host Drew Carey, actor Gilles Marini (Sex in the City: The Movie, Switched at Birth andDancing with the Stars), Access Hollywood co-host Kit Hoover, reality TV stars Ethan Zohn and Jenna Morasca (Survivor, The Amazing Race and Everyday Health) and actor Sean Astin (The GooniesThe Lord of the Rings and Rudy) are participating in the historic runDisney race weekend, Jan. 10-13.