The Big Texas Ultra is a 100K, 50K, and 15K trail run & 15K RUCK held on Lake Georgetown near the heart of Texas. Featuring beautiful scenery and challenging rocky, dirt, and grass trails with over 4600 feet of elevation gain for the 100K event, the race follows a 31.1 Mile looped course and a unique route for the 15K, beginning and ending at the Russell Park.