"As a marathon runner targeting a sub-3:00 finish, I've discovered that power-based training has transformed my approach to the distance. Unlike pace, which fluctuates with terrain and conditions, power provides a consistent metric for effort—but only if you can monitor it effectively. This is where ENGO has revolutionized my training.

I'm all about running by feel, but sometimes I misjudge my effort. During training for my last 10K, I used ENGO to track my power and heart rate to make sure my 'easy' days were actually easy, and my 'hard' days were intense enough. At the Barcelona 10K, I almost went too hard too soon, but ENGO showed me I needed to hold back. It kept me in check during the first half, so I had enough left to push hard at the end. It's like having a coach constantly whispering 'stay on track' in my ear, and it's helped me find the perfect balance between effort and performance.

After clocking a 3:06 at Berlin Marathon and a 1:28 at Helsinki Half Marathon last year, I knew breaking that 3-hour barrier would require perfect execution of both training and race strategy. Training six days weekly with a power-centric program means each session has specific targets that can't be compromised by environmental variables.

Checking my watch during crucial tempo runs and threshold sessions induce micro-disruptions. They might seem insignificant, but they accumulate—affecting rhythm, breathing patterns, and ultimately training quality. Now, with real-time power data directly in my line of sight, I maintain perfect form while ensuring every minute of training delivers the intended stimulus.

The psychological impact has been equally significant. Running requires a delicate balance between analytical awareness and intuitive flow. ENGO bridges these seemingly contradictory states—providing crucial data without disrupting the meditative state that distance running demands. This has allowed me to develop a stronger mind-body connection, correlating specific power outputs with perceived effort across varying conditions.

As I prepare for qualification attempts at the London, Chicago, and Boston Marathons, ENGO has become my most valued training partner. Beyond the raw performance benefits, it's enhanced my connection to and enjoyment of the sport itself. By removing the distraction of data collection, I've rediscovered the pure flow state that attracted me to running initially.

For runners serious about performance optimization, ENGO offers an unparalleled combination of precision and simplicity. It doesn't just provide data—it integrates that data seamlessly into your running experience, creating a continuous feedback loop that elevates both training and racing to new levels."