About Mammoth
BE MORE HUMAN.
Our Mission
Our Vision
Our Mission Our Vision
Our Story
Mammoth exists to help people. The events are the tool we use to connect people and build relationships with one another. I believe if we can create a world class racing experience for a small amount of people we can open up the door for folks to connect on an incredibly deep level while struggling out on the course, in the village area and out at a run turnaround. Everything about our races is tough - the planning, the racing, the crewing and volunteering. Nothing about our business is normal and we like it that way. Good things come from tough situations.
Don’t quit when it gets tough as the lessons learned through grit extend well beyond race day.
Meet The Riley’s
After having our amazing twin girls in 2019 - followed almost immediately by the pandemic - Carmela and I had a lot of time to think and reflect about how we wanted to craft this new chapter in our lives. Carmela took the entrepreneurial leap in 2021, by leaving her teaching position after 12 years and moving into health coaching. Her contagious spirit caught fire as she has worked over the past five years to heal people from the inside out and revive their energy and passion for life. She currently runs group functional medicine detoxes, individualized health coaching with the support of functional labs, and corporate health and wellness presentations.
In early 2025 the owner of our gym announced that he would be shutting the doors. The gym is what brought Carmela and I together, it is what our girls have known their entire lives and was our base for togetherness. Knowing this was not an acceptable answer Carmela got to work looking for a new home for our gym community. For six weeks she tirelessly worked to find a location, develop standard operations procedures, procure equipment, hire coaches, start construction, and she dove headfirst into full busn ownership. In seeking to provide the full scope of health and wellness she would go on to procure the unit next door to the gym and has recently launched a holistic wellness experience including fitness, recovery, and nutrition. It has been an absolute joy to hear her successes, and we could not be prouder of her as an entrepreneurial momma.
My passion for ultra triathlon is rooted in the joy that I have personally gotten from the experiences competing in ultra sports. Ultra triathlon provides the unique opportunity to be both superhuman and completely broken simultaneously. Unlike most experiences the sport provides endless hours to self-reflect, the need for consistent internal feedback, ebbs and flows of self-doubt, and the understanding that something will inevitably go wrong during the event – no matter how seemingly prepared we may feel. What makes ultra sports different is that most – from the event onward – navigate life differently. Ultra success is typically not a metal to hang and move on from, but instead a life defining moment in which the lessons we have learned about who we are make us better and more reflective spouses, parents, family, and community members.
Mammoth Endurance is our opportunity to share this passion with the ultra-community that sets my soul on fire. With a direction to expand and share this mentality with a new cohort of people seeking this life altering experience through new races and events, officializations, partnerships, and a true understanding about what Mammoth Endurance can become, while respecting its deep and meaningful traditions. This is our opportunity to give back, help those around us grow, bridge the gap and mindset around what we are capable of as humans, and intertwine a connectedness in us that most only have the pleasure of conceptualizing.
We love that we have been blessed with the opportunity to take Mammoth on and cannot wait to see you on the course,
Dave and Carmela
The Mammoth Team
Ryan Dugger from Bandera Studios
Creative Director | Tennessee
Ryan is my best friend and an incredibly talented visionary. He is the brains behind our "look" here at Mammoth. Every photo or video you see comes from his desk. He's an award winning photographer and filmmaker and his work has been seen by thousands in various print and online publications. We're lucky to have him in our corner as we continue to tell stories through our films and photo. His passion for people and his commitment to his work is second to none. This business wouldn't be where it is without the creative direction we receive from Ryan and his team.
John Wall
Equipment Manager | Maryland
John stays up all night, works until his hands fall off, never complains about a thing and will give you everything he has if it means you will be more comfortable or happier. He's an incredibly selfless and life-giving person. If we're in a tight spot, we call John and without skipping a beat he jumps in and gets done whatever needs to get done. John's been giving his time and energy to the ultra-tri races longer than anyone here. He's as real as they come, a trustworthy friend and reliable co-worker. He knows how to work hard and have fun at the same time - we love that about John.
Greg Yonkoske (left)
Timing and Scoring | Florida
Greg is one those friends who will be there without asking why. He's often stuck at a main timing tent during the races and during his "breaks" you'll find him at a turnaround or walking the village to check on athletes. Greg loves being at the races and getting inspired by the athletes, but what he doesn't know is how much he inspires everyone on the team. He shows up, gets done whatever needs to be done, and brings a sense of hard work and honesty to our team that can never be replaced. A special Thank You to Greg for all his years and sacrifice while serving our country in the United States Navy.
Drew Elrick
Graphic Design | Minnesota
Drew and I sat in the back of our high school art class sketching up cars and patterns with our #2 pencils. He is an integral part of our look and has designed and thought up every logo we've ever used for anything. Drew is someone we go to when we need a logo, banner, artwork for print, or just when I need some advice in life and business. He's wise beyond his years, an incredible artist and an committed father & husband for his family. He's someone you can count on and I cherish that more than anything. Go find yourself a Drew if you don't have one.
BE MORE HUMAN.
“These challenges [misogi] can show you that you had this latent potential you didn’t realize and that you can go further than you ever believed.
When you put yourself in a challenging environment where you have a good chance of failing, lots of fears fade and things start moving.” - Michael Easter