A runner training with power from a foot pod (Source: Stryd)
In the evolution of endurance sports, the integration of power metrics has revolutionized training and performance, particularly in cycling. Now, this paradigm is making significant inroads into the running community, offering athletes and coaches a more nuanced approach to training—especially in disciplines like ultra-running and triathlon, where terrain variability and race duration present unique challenges.
The Emergence of Power Metrics in Endurance Sports
The concept of using power to gauge athletic performance gained prominence in cycling during the 1980s. Cyclists sought a reliable metric that could quantify effort independent of external variables like wind resistance and gradient changes. Power meters provided real-time data on the actual work being performed, allowing for precise pacing strategies and more effective training regimens.
Transitioning to Running: The Case for Power over Pace
Traditionally, runners have relied on pace and heart rate to monitor intensity. However, these metrics can be influenced by factors such as terrain, environmental conditions, and physiological fluctuations. Running power meters, like those developed by Stryd, offer a direct measurement of the effort exerted, providing a consistent metric across varying conditions.
Advantages of Running Power in Variable Terrains
One of the primary challenges in ultra-running and triathlon is managing effort across diverse terrains. Hilly courses, in particular, make pace-based training problematic, as maintaining a steady pace uphill requires significantly more effort than on flat ground. Experts like Alan Couzens and Dr. Will O’Connor emphasize the importance of energy pacing, where athletes regulate their effort based on power rather than pace to ensure optimal energy distribution across a race.
Running power meters enable athletes to maintain a consistent power output, regardless of terrain changes. Instead of forcing a steady pace uphill—leading to excessive fatigue—a power-based approach allows runners to adjust speed while keeping effort constant, similar to how cyclists manage power output on rolling courses. This prevents overexertion on climbs and enables smarter energy conservation, leading to better performance outcomes in both training and racing.

Differences between power and pace on varied terrain (Source: Athletica)
Implementing Power-Based Training with Athletica
With the recent integration of running power prescription into Athletica, athletes and coaches can now tailor training plans that leverage these advanced metrics. Key features of this update include:
- Threshold Settings: Users can input their running power threshold, enabling personalized power zones and more accurate training prescriptions.
- Power-Based Prescriptions: Training plans can now be prescribed based on power instead of pace, allowing for consistent effort management across varying terrains.
- Enhanced Data Visualization: Power profiles are displayed in training charts, providing clear insights into performance and facilitating more informed adjustments to training plans.

Running power profile in Athletica
By embracing running power metrics, Athletica aims to provide athletes with the tools necessary to optimize performance, particularly in disciplines where terrain variability and race duration demand meticulous energy management. This advancement underscores our commitment to integrating science-backed methodologies into training, empowering athletes to achieve their goals with precision and confidence.