Endurance Performance Coaching Philosophy
Inform. Improve. Inspire.
At I3 Human Performance, based in Tennessee, our coaching team blends sport science, data-driven systems, and real-world endurance experience to help runners, endurance athletes, and hybrid athletes train intelligently and perform at a high level without sacrificing longevity or life balance.
Meet the Coaches at I3 Human Performance
Our Tennessee-based endurance coaching team combines evidence-based training, sport science, real-world endurance experience, and long-term athlete development principles.
Performance Coach
Andrew Cox is a former state champion in cross country and the 1600 meters who combines competitive experience with an evidence-based, systems-driven approach to coaching. As a performance and endurance coach at I3 Human Performance, he helps athletes build sustainable performance through structured endurance training, strength and conditioning, and long-term athletic development.
Andrew earned a B.S. in Health Sciences from Samford University, with a minor in Data Analytics, and an M.S. in Physiology of Exercise (Human Performance Track) from Ohio University. He is also a Certified Strength and Conditioning Specialist (CSCS), applying current sport science principles to optimize performance, adaptation, and long-term athlete development.
His background in data analytics and exercise physiology allows him to translate performance metrics into practical coaching decisions, helping athletes train with greater clarity, confidence, and measurable progression.
Andrew specializes in integrating strength and conditioning with endurance training through individualized systems designed to reduce injury risk, improve durability, and support sustainable performance. His coaching philosophy emphasizes informed decision-making, purposeful training, and long-term development rather than short-term results.
Based in Tennessee, Andrew works with runners, endurance athletes, hybrid athletes, and professionals seeking a structured, evidence-based approach to performance improvement.
Andrew Cox
Kevin Cox
Ultra Endurance Coach
Kevin Cox brings more than 15 years of endurance experience and 44 ultra-distance finishes to I3 Human Performance. His accomplishments include multiple 50-mile, 100K, and 100-mile races, multi-day stage events, and long-distance adventure efforts such as Rim-to-Rim-to-Rim in the Grand Canyon. He has logged countless miles on rugged terrain throughout the Southeast, including Frozen Head State Park, home of the legendary Barkley Marathons.
As a full-time professional, husband, and father, Kevin understands the challenge of pursuing ambitious athletic goals while balancing the demands of work, family, and everyday life. His coaching philosophy is built around helping athletes make consistent progress without sacrificing the responsibilities that matter most.
Kevin specializes in guiding runners and endurance athletes through practical, sustainable training that develops durability, resilience, and long-term performance. He emphasizes intelligent progression, disciplined fueling, effective recovery, and the mental skills required to succeed in both training and competition.
Based in Tennessee, Kevin works with runners, trail runners, ultra runners, and professionals seeking a structured, evidence-based approach to endurance performance. His goal is to help athletes build confidence, achieve meaningful goals, and enjoy the process of becoming stronger and more capable over time.
Why Athletes Choose I3 Human Performance
Personalized Training Built Around Your Goals
Evidence-Based Coaching and Performance Analysis
Integrated Strength and Endurance Programming
Flexible Remote Coaching and Ongoing Support
Sustainable Progress Without Burnout
Our Approach
Inform. Improve. Inspire.
At I3 Human Performance, coaching begins with clarity. We believe athletes perform best when they understand the purpose behind their training, not just the workout itself.
Inform.
Every athlete starts with assessment and analysis. We consider training history, performance data, current fitness level, recovery patterns, and real-life demands. Grounded in exercise physiology and strength & conditioning principles, our programming begins with informed decision-making.
Improve.
Progress is built through structured, purposeful training. Whether focused on endurance development, strength progression, or an integrated performance plan, our systems are designed to create measurable, sustainable improvement over time.
Inspire.
High performance requires more than physical preparation. It demands discipline, resilience, and alignment with long-term goals. We help athletes build sustainable habits and intelligent systems that support success, in training, competition, and life.
Our mission is to develop durable athletes through informed programming, measurable progress, and disciplined execution. Learn more about our coaching services.
Who We Coach
Competitive runners pursuing long-term athletic development
High school and collegiate cross-country athletes
Marathon and half-marathon runners
Ultra runners and trail runners
Hybrid athletes balancing endurance and strength training
Working professionals pursuing ambitious endurance goals
I3 Human Performance provides individualized endurance coaching, running coaching, strength and conditioning, and performance programming for athletes committed to long-term development. We work with runners, endurance athletes, and professionals seeking a structured, evidence-based approach to improving performance.