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!


The Races are on! Signup will re-open at 12:00 pm on July 1. Each race will have a 50 athlete maximum due to COVID-19. For more details click

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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.

The 2020 Greater Yellowstone Adventure Series Race Schedule

9th Annual Madison Triathlon – July 16, 2020

9th Annual Madison Duathlon – July 17, 2020

13th Annual Madison Marathon – July 18, 2020

6th Annual Big Sky Marathon – July 19, 2020

25th Annual Water to Whiskey 5KJuly 24, 2020

The Inaugural Madison Ultra – July 25, 2020

4th Annual Tour de Gravelly – July 26, 2020

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?

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.

The Inaugural Madison Ultra Marathons - July 25, 2020

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.

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.

Partners for 2020
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