Training Plan Library
Evidence-backed training notes, gear deep dives, and lab-tested guidance for runners who like the details.
Filters
Browse topics
How to Build Your Running Base: A Complete Guide for Beginners
Learn the fundamentals of building a solid aerobic base for running. This comprehensive guide covers mileage progression, easy pace running, and recovery strategies to help you run faster and injury-free.
Best Marathon Training Shoes: Top Picks for 2026
Find the best marathon training shoes for high mileage with durable cushioning and comfortable fits for long runs, tempo workouts, and daily training.
Best Daily Trainer Running Shoes: Top Picks for 2026
Find the best daily trainer running shoes with versatile cushioning, durability, and comfort for everyday training miles.
Heart Rate Data Troubleshooting: When the Numbers Don't Make Sense
Your heart rate data looks wrong. Is it the sensor, or is something else going on? Learn to troubleshoot HR issues and understand what abnormal readings mean.
Balancing Running and Strength Training: A Complete Guide
How do you fit strength training into a running schedule? Learn how to balance both without sacrificing progress in either.
Stuck in the Gray Zone? How to Stop Running Every Run 'Medium'
Most runners run too fast on easy days and too slow on hard days. Learn how to escape the gray zone and unlock real improvement with polarized training.
Understanding Training Zones: Heart Rate, Pace, and Perceived Effort
Master the different training zone systems and learn how to use heart rate, pace, and perceived effort to train at the right intensity.
Building Speed Over Time: Progressive Speed Development for Runners
Learn how to systematically develop speed across a training cycle. Includes progressive workout plans, phase-appropriate speed work, and long-term speed building strategies.
Running in Your 30s: Training Through Life's Busiest Decade
Your 30s bring career demands, family responsibilities, and less time for running. Here's how to train smart, stay healthy, and keep improving despite it all.
Doubles: When and How to Run Twice a Day
Running twice in one day—doubles—can boost your training. But when does it make sense? Learn when doubles help, when they hurt, and how to do them right.
Joining a Running Group: Finding Your People
Running groups can transform your training and motivation. Learn how to find the right group, what to expect, and how to get the most from group running.
Tempo Runs: The Complete Guide to Running's Most Important Workout
Master the tempo run—the workout that improves lactate threshold and predicts race performance. Learn proper tempo pace, duration, and variations.
Using Strava for Training: Beyond the Kudos
Strava is more than a social network. Learn how to use Strava's training features, route planning, and analytics to actually improve your running.
How Long Does It Take to Get Better at Running?
When will running get easier? When will you get faster? Here's the realistic timeline for running improvements, from your first week to your first year.
Running During Pregnancy: A Trimester-by-Trimester Guide
Can you run while pregnant? Yes—for most women, running during pregnancy is safe and beneficial. Learn how to adapt your training through each trimester.
Running Over 50: Staying Fast and Injury-Free
Age brings new challenges, but running over 50 is absolutely possible—and rewarding. Learn how to adapt training, prevent injuries, and keep improving.
Running While Sick: When to Run and When to Rest
Should you run with a cold? What about a fever? Learn the neck rule, when to push through, and when rest is the smarter choice for faster recovery.
10 Beginner Running Mistakes (And How to Avoid Them)
New to running? Avoid the most common mistakes that derail beginners. Learn what NOT to do—and what to do instead—as you start your running journey.
Why Easy Runs Matter: The Most Important Workout You're Probably Doing Wrong
Easy runs are where the magic happens—but most runners run them too fast. Learn why slow running builds speed and how to finally run easy correctly.
Fartlek Training: The Flexible Speed Workout You're Missing
Discover fartlek—the unstructured speed session that builds fitness, breaks monotony, and teaches you to run by feel. Learn how to do it right.