Critical Speed & Lactate Threshold Guide
Master the two most important metrics in endurance training. Learn how to test, train, and improve your Critical Speed and thresholds.
9-Page PDF Guide
Professional, science-backed training resource
Complete science explanation of CS & Threshold
Field testing protocols & lab testing options
Sample workouts for threshold development
Zone-based training prescription strategies
Common mistakes to avoid
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What's Inside the Guide
The Science
Understand the physiology behind Critical Speed and Lactate Threshold, including how they differ and why both matter.
Testing Protocols
Learn how to test your CS with 3-min/12-min time trials, estimate from races, or get precision lab testing.
Training Applications
Get sample threshold workouts, zone prescriptions, and strategies to improve both markers strategically.
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