How Do You Measure Your Cycling Fitness and Ability

For any serious cyclist, understanding the physiological metrics that underpin performance is essential to training smarter and racing better. Two numbers sit at the heart of cycling science: VO2 max — your aerobic ceiling — and FTP (Functional Threshold Power) — your sustainable threshold. Both are critical, but they tell very different stories about your fitness, and knowing when to trust each one can transform how you approach training and competition.

This guide walks through how to measure and interpret each metric, explains the physiological relationship between them, and — crucially — settles the debate over which is the more practical and powerful predictor of real-world cycling performance. Whether you're a club racer or a seasoned amateur, these insights will sharpen your approach to both testing and training.

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https://drmaxhealth.com/media/hfsomn0p/vo2-max-vs-ftp-how-cyclists-should-evaluate-both.pdf