How should you train for a marathon?
Marathon Training: An Evidence-Based Guide
A cautious framework for marathon preparation that separates useful training principles from unsupported universal rules.
Read guideEvidence library
Runner World Guides
Detailed answers to common running questions with claim-level citations, explicit limits and links to the underlying peer-reviewed research.
How can you run faster?
How to Run Faster: Training Principles That Hold Up
What reviews of endurance and strength training suggest, with clear limits on who was studied and how certain the effects are.
Read guideHow do you start running as a beginner?
How to Start Running: A Beginner’s Guide
A cautious starting framework grounded in what injury-prevention research does—and does not—show for novice runners.
Read guideHow many steps should you take per day?
How Many Steps Should You Take Per Day?
Large studies show benefits below 10,000 steps, but age, baseline activity and health make one universal daily target inappropriate.
Read guideCan you run after knee replacement surgery?
Running After Knee Replacement Surgery: Evidence and Safety
What systematic reviews support, what remains uncertain, and why running after knee arthroplasty requires individualized surgical clearance.
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