A few of the athletes I coach.
A sample, not the roster — four different stories from the front of the sport. Click through for how we worked together.
Katie Schide
Abby Hall
Fuzhao Xiang
Ryan Montgomery
Performance by design.
Coaching isn't a plan you receive — it's a loop we run together. Six stages, always turning, every input feeding the next decision.
Coach. Author. Bridge between the science and the sport.
For more than 20 years I've coached ultramarathon runners — from first-time 50K athletes to champions of Western States and UTMB. I pioneered the application of sports-science research to ultrarunning, translating what the lab actually shows into what works on the trail.
I lead the CTS High Performance Team, wrote Training Essentials for Ultrarunning, host the Koopcast, and write a column for Ultrarunning Magazine. If you race ultras, my fingerprints are probably on something in your training.
Five ways in.
CTS High Performance Team
The coaching group behind athletes winning the sport's biggest races. Coaching for elite and everyday ultrarunners.
Meet the team → CoachingIndividual Coaching
One-on-one coaching with me. Limited roster, full attention — the same process you see on this page, applied to you.
Start the conversation → NewKoop AI
My training methodology, on demand. Evidence-based answers to your ultrarunning training questions, anytime.
Try Koop AI → BookTraining Essentials for Ultrarunning
The benchmark book for ultramarathon training, used by elite and everyday athletes alike. Also on audiobook.
Get the book → ArchiveKoopcast
Ultra. Training. Science. 200+ episodes with the researchers and thinkers shaping the sport. Full archive available.
Browse episodes →The analysis I run for my athletes. Free, for you.
No paywall. Tell me who you are, connect Strava, and the report shows up in your inbox.
Race Pace Plan
Aid-station splits with A/B/C goals — validated against how runners like you actually ran your race, not how a calculator thinks they did.
Athlete Progress Report
A season-over-season dashboard of your running: volume, grade-adjusted pace, vert, long runs — the same review I do with my athletes.
Reports are generated from your data, for you only. Nothing is shared or shown publicly.
Get in touch.
Just want to reach me?
Press, podcast guests, fellow coaches, one-off questions — email me directly. No form required.
jasonkoop@gmail.com