Thank you to all of our summer 2021 athletes! We hope to see you next year. The summer 2022 race dates will be released soon. Sign up for our newsletter to stay in the loop!The Races

The details of the eight races of the Greater Yellowstone Adventure Series are below. For the truly adventurous, please note that three of the races are labeled as “legs” of something called the Madison Trifecta. This means the completion of the Madison Duathlon (first leg), Madison Marathon (second leg), and the Madison Triathlon (third leg) all within a four week time span. This is called the Madison Trifecta. As of the end of 2015, there have been only 18 people who have completed the Madison Trifecta. They earned the coveted T.B.A. award which stands for Total Bad Ass. This is because anyone who can do the Madison Trifecta over four weeks of summer is a Total Bad Ass.

​Please also note that marathon runners have an opportunity to do a Double Marathon. The Madison Marathon and Big Sky Marathon are scheduled as back-to-back races on Saturday and Sunday. This will earn Marathon Maniacs four stars. It’s also the only double marathon in Montana. Anyone who can do a Double at such a high altitude is also som