Ever said these sentences?

“I want to try running but don’t know where to start.”

“I’m an avid runner, but can’t seem to get to the next level.”

“I just need someone to hold me accountable for my training.”

Avoid the Gray Zone
Endurance Matters coaching philosophy revolves around avoiding the gray zone and polarizing your training so you can maximize the gains, avoid burnout, and stay injury free.

Personal coaching with Nate Grimm can help you reach your fitness and running goals whether you are going from the couch to your first 5k or you’re an avid runner looking for a way to improve your times.

Nate is armed with 14+ years of running experience and a Master’s degree in Exercise Physiology. With all this knowledge, Nate has developed a thorough consultation process that gives him the insights about your personal strengths, weaknesses, running mechanics, and motivations to provide personalized training to optimize your chances at reaching your goals. Whether you are in the Fort Collins area or across the country, Nate can provide you with expertise and accountability from anywhere you have internet access.

Interested in Coaching? Check out all my services here.

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For the past 4 years I have run mainly on my own and have had poor success due to injuries. I have been with Nate for nearly 3 months now and I have not only stayed healthy but I have also seen some tremendous results. He knows what he is doing as a coach and I think this stems from him being a runner himself for quite some time now. He also knows the physiological component to running due to him having a Masters degree in Exercise Physiology. For anyone who is just starting running or is an experienced runner, I firmly believe that Nate Grimm is a phenomenal fit.Dillon Planking


Honestly, I don’t know where I would be without Nate. I might still be running, but there’s no way that I would be running as safely or as effectively as I’ve been this year without his knowledge and guidance. Nate is an experienced expert runner and exercise physiologist and I’ve been very grateful to have him as my coach. With the help of his teaching and training plans, I was able to cut my 10k time from over 61 minutes to just over 43 minutes.

But the significantly improved race times, functional warm-ups, different paces and strength and mobility work were only part of what I learned by training with him. While of course I experienced many physical benefits from Nate’s running workouts, I literally believe that he has helped me become a better, more disciplined person. Running has improved all aspects of my life from my happiness, daily energy levels, interactions with coworkers and other non-physiological factors. By staying motivated and on track through his clearly laid out training plans, Nate has helped fuel my passion and desire to run and never stop running.

Instead of suffering an injury or becoming burnt out too quick by running on my own, Nate encouraged me to learn more about running and the incredible benefits it offers people. By breaking down the exercise mechanics and physiology in a way that’s easy to understand and relating it to my workouts, it made each run so much more meaningful knowing what’s happening and why I’m doing it. I’m proud to have Nate as my running coach, and I highly recommend his services – especially if you’re a new runner or ‘just catching the bug.’


Daniel’s Fitness Journey