Jenny McCoy
Contributing Writer
Jenny is a Boulder, Colorado-based health and fitness journalist. She’s been freelancing for Runner’s World since 2015 and especially loves to write human interest profiles, in-depth service pieces and stories that explore the intersection of exercise and mental health. Her work has also been published by SELF, Men’s Journal, and Condé Nast Traveler, among other outlets. When she’s not running or writing, Jenny enjoys coaching youth swimming, rereading Harry Potter, and buying too many houseplants.
How to Build Stamina and Why It Matters for Runners
Oct 3, 2024.
How to Run Slower on Your Zone 2 Days
Follow this advice for reining in your pace so you can reap all the awesome benefits of easy running.
How to Master Zone 3 Training to Maximize the Benefits and Avoid the Pitfalls
Everything you need to know about training in this often forgotten zone.
You Run Long, But Can’t Can Get Faster—Here’s What to Do
Stuck in a speed rut? These coach-backed tips will boost your pace.
These Glute Exercises for Knee Pain Keep You Running Strong
These physical therapist-approved moves can help you run longer, stronger, and pain-free.
What to Know About Average Running Heart Rate
Experts explain what’s “normal” when it comes to heart rate while running, as well as how to use this metric to improve performance.
The Magic of the 30-Second Walk Interval
With run/walk, walk intervals are nearly all 30 seconds, regardless of the run interval time. Here’s why.
Should Runners Practice Sleepmaxxing During Their Training?
Oct 3, 2024.
10 Fun Running Workouts to Keep You Motivated Through the Winter
Cold showers, sponges, and more expert-backed strategies for surviving the summer weather.
What Is Brisk Walking and Why it is So Great For Runners
Why you should increase the intensity of your strolls and expert-backed tips for how to effectively walk harder.
The Dimensions of Wellness Every Runner Should Know
Yes, physical health is important, but it’s just one of eight pillars important for living well.
A 1-Month Treadmill Challenge to Kickstart Your Fitness Habit or Get You Back in the Game
Aug 28, 2024.
8 Running Challenges to Conquer in 2025
Breathe new life into your workout routine with these coach-approved ideas.
7 Signs of Vitamin B12 Deficiency Every Runner Should Know
Three experts explain what to watch for and how to correct low stores of this B vitamin.
9 Signs Your Running Shoes Aren’t Working For You
What to look out for when it comes to your shoes, including obvious and subtle cues you should probably get a new pair.
6 Signs It’s Time to Switch Up Your Run Routine for Better Performance
Oct 3, 2024.
How Much Does Running Volume Matter?
Three coaches explain how to dial in this aspect of your training—and the pay off you’ll see as a result.
The Best Virtual Races With the Most Awesome Bling
If sweet swag inspires you, but you don’t want to travel to race, here is some guaranteed inspo!
Exactly Why and How Altitude Training Boosts Race Performance
Elite runners rely on this aspect of race training, but should you also consider booking a training trip?
Running Time vs. Distance: Which Is Better for Performance?
Plus, how to find the one that’s right for you.
How to Progress Your Fitness So You Continue to See Results
Combat leg stiffness with these physical therapist-approved tips.
StairMaster vs. Treadmill: How These Cardio Machines Compare
While running outdoors is likely your preferred choice, here’s how these classic gym tools stack up.
Everything You Need to Know About Running With Knee Arthritis
Here’s how to modify your routine to sidestep pain associated with arthritis.
How to Treat Tight Calves for Better Running
Jan 13, 2025.
Try These Exercises for Hip Pain to Run Longer and Faster Ache-Free
Find relief from a common runner complaint with these 14 moves.
The Pros and Cons of Cushioned Running Shoes
Combat leg stiffness with these physical therapist-approved tips.
10 Expert Tips for Running in Humidity
Cold showers, sponges, and more expert-backed strategies for surviving the summer weather.
The Best Psoas Stretches to Address Tight Hip Flexors
CA Notice at Collection.
Our Speed Training Guide Will Help You Run Your Fastest Race
Ready to run a mile, 5K, or 10K at your fastest clip this summer? We have everything you need to make it happen.
How to Treat Tight Quads from Running
Combat leg stiffness with these physical therapist-approved tips.
How to Take Care of Your Feet
Six runner-specific tips to protect your feet from the hazards of the road or trail.
How Many Miles is 10,000 Steps? Plus What Else to Know About This Metric
Experts explain the origins of this common goal, its pros and cons, and other daily figures worth tracking.