Training zones are often presented as precise and complex, but the underlying physiology is far simpler. In this episode, CTS Coach Cliff Pittman explains the origin of training zones, why three zones reflect the true physiological model, and how five zones are used as a practical tool for structuring training.

We also cover how to determine your own zones, why labels differ across platforms, and how to apply this framework to real-world ultrarunning. The takeaway is clear: it’s not about how many zones you use, it’s about how you distribute your effort.

Free Ultrarunning Training Assessment: https://trainright.com/ultrarunning-training-assessment-welcome/

HOST

Cliff Pittman is the Coaching Development Director at CTS, leading the Ultrarunning and Cycling Coaching staff with a specialty in guiding athletes from first-time ultrarunners to elite competitors at races like Western States 100, Leadville 100, and the Triple Crown of 200s. A competitive trail and ultra athlete himself, Cliff brings firsthand experience and a rare ability to turn complex training science into simple, actionable coaching.

Running Pace and Heart Rate Training Zones Calculator: https://trainright.com/running-pace-and-heart-rate-zone-calculator/

Interested in working with a coach? Schedule a free consult: https://trainright.com/coaching/ultrarunning/

Self-coached athlete? Check out our TrainRight Membership: https://trainright.com/membership/

Find more free resources here: https://trainright.com/blog/

Three Zones vs Five Zones: What Ultrarunners Actually Need to Know

CTS Ultrarunning Podcast

Three Zones vs Five Zones: What Ultrarunners Actually Need to Know