Racing the Madison
Montana Tourism Event
of the Year Award
Toughest Road
Best Marathon in

The Madison Marathon has been recognized as the #1 in our state by Vacation Home Rentals!


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!

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This is a book about the amazing and global growth of endurance sporting events such as marathons, ultras, triathlons, duathlons, cycling races, and an even more astonishing growth of 10K and 5K races.  Irrespective of gender, age, body shape or size, ethnicity, culture, or country, millions of people around the world are signing up for sporting events and saying ‘Go.’  Sam Korsmoe, the author and race director of the Greater Yellowstone Adventure Series, invested more than a year researching, interviewing, and compiling athletic profiles for this book.  This is not a book on “how to run a marathon.”  It is a book on why so many are deciding to do so and why you should consider joining this incredible group of athletes.

Thank you for hanging tough with us in 2020.  

We look forward to welcoming everyone back to Montana in 2021.

The 2021 Greater Yellowstone Adventure Series Race Schedule

10th Annual Madison Triathlon – July 8, 2021

10th Annual Madison Duathlon – July 9, 2021

14th Annual Madison Marathon – July 10, 2021

7th Annual Big Sky Marathon – July 11, 2021

2nd Annual Madison Ultra – July 16, 2021

26th Annual Water to Whiskey 5KJuly 17, 2021

5th Annual Tour de Gravelly – July 18, 2021

Click        for information on each race.

Like the duathlon, the Madison Triathlon was intended to be an extension of a good idea. It became, however, a good idea on its own as well as the genesis of the Madison Trifecta Sporting Series. Do all three! If you do all three events (the duathlon, marathon, and triathlon) in a single summer, you will be a T.B.A.

The Madison Duathlon (bike/run) started out as a natural expansion of a good idea (i.e. the Madison Marathon), but it quickly became a good idea on its own. It has grown in popularity every year from the inaugural race in 2012. Many duathletes who have competed in the Madison Marathon say they had more fun on the duathlon.

Since the inaugural race over Labor Day Weekend in 2008, the Madison Marathon has grown by leaps and bounds. It has joined the ranks of American marathons that sell out each year. We have hosted runners from at least 40 states and several countries. Nearly one-half of the runners come from outside of Montana which is pretty good considering we have just 200 slots open.

The Big Sky Marathon is the result of our success with the Madison Marathon. We held our Inaugural race in 2015 to appease marathoners from around the world who were screaming for a double in Montana. To non-marathoners, this is completely counter-intuitive. Afterall, why would you host a second marathon immediately after one of the most difficult marathons in America?

2nd Annual Madison Ultra Up/Down - July 16, 2021

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After a year of planning and a few months of waiting, we are ready to say ‘Go’ to Montana’s and maybe the country’s newest Ultra Marathon for 2019.  The Inaugural Madison Ultra races are here. We have a unique twist to ours. It’s a two-way Ultra. You either run up or you run down and in between you’re going to gain or lose over 6,000 feet in vertical.  Get ready for an incredible adventure.

By definition, an Ultra is any race longer than 26.2 miles or 42 kilometers.  Most Ultras are either nice round numbers such as 50K, 100K, 50 Miles, 100 Miles and even 24 hours, or they are a specific distance between two points, e.g. the Badwater Ultra is 135 miles which is the distance from the lowest point in Death Valley to the highest point (original route) at Mount Whitney in the contiguous United States.

Race Check in – 4:00 to 5:30 PM     Race Start:  6:00 PM

For many years, the Madison River Run was a local fun run that generally attracted 50 to 60 runners from Madison County and the rest of Southwest Montana. It is still a local fun run and it still attracts runners from Southwest Montana, but this is just the beginning.

Are you ready for a real adventure? Something that is truly not a pansy ass city race? Well, we got one for you. This is a cycling race along the spine of the Gravelly Range. For many miles, it is the same route as the Madison and Big Sky Marathon. The elevation gain is over 4,600 feet. Interested? Keep reading.