.png){kind=small}
Coach Greg
Education and Experience
Coaching Philosophy
Growth first. It's not about where we started, but how far we can go.
Growth looks different for everyone. For some of us, it's competing for a top spot in our next ultramarathon. For others, it's just understanding how to balance a diet and exercise routine for the first time in our lives. One is not better than the other, and I've helped athletes to succeed in both.
If you're ready to invest time and energy in yourself, then I'll bring the science-based tools for your success. I have more than a decade of experience in long distance running, master-level education in exercise and nutrition science, and I'm a college instructor of anatomy and physiology. I help athletes to train with the confidence that their efforts will prepare them to their goals.
And lastly, I'm on your team. You deserve a coach that believes in your ability to grow and achieve. I'm invested in YOU, and I'm excited to see what we can achieve together.
-Greg
Credentials
Greg Marshall is the Head Coach and Founder of Treeline Endurance, bringing a rare combination of academic training and applied endurance coaching experience. He is a college-level instructor of Human Anatomy and Physiology with graduate education in Exercise and Nutrition Sciences, alongside graduate research in carbon-plated footwear technology. His coaching approach is further informed by extensive on-site pacing and crewing experience at premier ultra-distance events, complemented by multiple industry-recognized coaching and nutrition certifications. This background ensures athletes receive training that is scientifically grounded, practically tested, and tailored to the real demands of long-distance performance.
Media and Writing
-
Coach to Senior Editor at the Believe in the Run
-
Feature in the film From Broken to Breaking: The Colorado Trail FKT
-
Treeline Endurance blog
-
Copper Kings 100 training
Additional Background
-
College faculty instructor of Human Anatomy and Physiology
-
M.S. Exercise and Nutrition Sciences
-
On-site pacing and crewing for athletes during long distance events, including:
-
Other trail and road running events
Certifications
Running
Ultrarunning
Nutrition
_edi.png)
