2021 Thunder in the Valley Triathlon - Terre Haute Triathlon: We are excited to bring you another year of awesome racing at the beautiful Hawthorn Park! Coming into it's 36th year the Thunder in Valley is a time proven Hoosier favorite! Athletes ranging from 1st timers to best best pros in the world have come from all over the Midwest and beyond to race this beautiful venue, take home some top notch race swag, and enjoy a professional and fun racing atmosphere. We hope you will come join us and become part of the tradition! Race Cap: 300 participants