Andrew Kastor

About the Author

Andrew Kastor is a seasoned running coach and endurance athlete with over two decades of experience guiding beginners and seasoned runners alike toward their personal bests. A former competitive marathoner who has completed more than 50 marathons worldwide, Kastor draws from his own triumphs and challenges to craft practical, science-backed training programs that prioritize injury prevention, mental resilience, and sustainable progress. His passion for making the sport accessible shines through in his writing, where he demystifies the marathon journey for everyday athletes. Whether you're lacing up for your first race or seeking to shave minutes off your PR, Kastor's approachable expertise empowers you to cross that finish line with confidence and joy.