
Tread Lightly Running Podcast
The Tread Lightly Running Podcast provides data-driven, evidence-based running advice in a practical, accessible, and inclusive manner. . You'll learn about how to run faster, marathon training, the latest fueling science, how to prevent running injury, and more.
Tread Lightly Running Podcast is co-hosted by Amanda Brooks and Laura Norris, MSc. Together, they have over 20 years of coaching experience and have helped thousands of runners reach their goals through 1:1 coaching and group training. They've appeared in Runner's World, SELF, NPR, Outside, and other major media.
Latest episodes

Dec 2, 2023 • 30min
Episode 43: Reasons Not to Run a Marathon
This episode might seem like one big hot take, but we are coming at this topic based on real-life coaching experience and an understanding of the physiology of marathon training. As hard as it may be for some to hear, there are times when you should NOT train for a marathon. Our recommendations are not absolutist; individual situations may vary. However, our intention is to encourage reflection for when to run a marathon - and when not to.
First, answer a listener's question on running fuel options for runners with IBS/IBD/sensitive stomachs. (We reference episode 5 on long run fueling.)
Discussion points include:
The impact of stress on marathon training
How long should you be running before you do a marathon
How far should you be able to run before a marathon?
Should you train for a marathon while trying to lose weight?
Eating disorders, injury, and health issues and their impact on marathon training
How many marathons should you run per year?
Why you should not train for a marathon if you have signs of overtraining
How long should you wait to run a marathon after having a baby?
Use code TREADLIGHTY for $50 off a membership on the Run to the Finish Virtual Run Club!
You can connect with us on Instagram (@treadlightlyrunning) or via email podtreadlightly@gmail.com - thank you all for listening!

Nov 25, 2023 • 32min
Episode 42: Your Guide to Cold Weather Running
This whole episode answers a listener’s question: what are our tips and tricks for running in cold weather? Amanda and Laura both have years of experience of running in the cold (from living in Northwest Indiana and Colorado). We take a look at what the research says about cold weather endurance training and share tips and tricks we’ve learned over the years.
Discussion points include:
Motivation during the winter months
The value of pre-run warm-ups for running in cold weather
How to dress for running in cold weather
Breathing issues from running in the cold
Hydration and fueling on runs in cold weather
Do you run slower in cold weather?
Tips for running on snow and ice
How cold is too cold to run?
Tips for racing in cold weather
Further resources:
https://www.runtothefinish.com/what-to-wear-winter-running/
https://lauranorrisrunning.com/your-guide-to-running-in-cold-weather/
https://lauranorrisrunning.com/how-cold-is-too-cold-to-run/
https://lauranorrisrunning.com/racing-cold-weather/
https://www.runtothefinish.com/best-winter-running-shoes/
https://www.runtothefinish.com/running-on-ice-tips/
https://www.runtothefinish.com/cold-weather-running-gear
References:
PMID: 34652333
PMID: 34574624
PMID: 26756639
PMID: 34574624
PMID: 17473775
PMID: 34752434

Nov 18, 2023 • 33min
Episode 41: How to Improve Your 5K Time
5K training and racing is hard, no matter your level of experience as a runner. Even if 3.1 miles is a warm-up for you, the distance can be challenging in terms of speed. If you want to improve your 5K time - whether that's a sub-40 min 5K, sub-30, or sub-20 - this is the episode for you!
We also answered a listener question on run-walk intervals.
Discussion points include:
Weekly mileage when training for a 5K
How to set a 5K goal pace
5K pace specific workouts
Do you taper for a 5K?
How to fuel for a 5K race
Warming up before a 5K race
How to pace a 5K race
How to recover after a 5K race
Further reading:
https://lauranorrisrunning.com/how-to-improve-your-5k-time/
https://lauranorrisrunning.com/5k-pace-chart/
https://lauranorrisrunning.com/transition-from-the-marathon-to-5k/
https://lauranorrisrunning.com/taper-for-a-5k-or-10k-race/
https://www.runtothefinish.com/walking-a-5k/
https://www.runtothefinish.com/first-5k-tips/
https://www.runtothefinish.com/couch-to-5k/
https://www.runtothefinish.com/run-a-5k-in-30-minutes/

Nov 11, 2023 • 29min
Episode 40: Diet Trends for Runners
After a listener question about training logs, we dive into a controversial topic: diet trends. We are not registered dietitians, so please always defer to a sports RD for individual advice. Here, we take a hard look at what the evidence says on glycogen depletion training, fasting for runners, and low-carb diets.
Discussion points include:
Glycogen depletion runs
Intermittent fasting and fasted running
Keto/high-fat-low-carb
How restrictive diets can affect athletic performance
Why carbs help your running
How many carbs runners should eat
Additional Resources:
Everything Fat Loss by Ben Carpenter (https://amzn.to/49kNUt8)
Athlete’s Plate Visual Guide:https://swell.uccs.edu/theathletesplate
https://lauranorrisrunning.com/low-carb-training-and-running/
https://lauranorrisrunning.com/should-you-do-fasted-runs/
References:
PMID: 28012184
PMID: 34001184
PMID: 30747558
PMID: 36173597
PMID: 34578819
PMID: 29315892
PMID: 22366285
https://journals.lww.com/nsca-scj/pages/articleviewer.aspx?year=2011&issue=02000&article=00003&type=Fulltext

Nov 4, 2023 • 34min
Episode 39: Running at High Altitude and Altitude Acclimatization
Ever wonder why it feels so hard when you run in Colorado or Utah? We discuss the science of altitude acclimatization and running at high altitudes in this episode. We also provide some helpful tips to make your next runs at high altitude feel better!
We also answer a listener question about easy pace for 5+ hour marathoners.
Discussion points include
What actually counts as high-altitude running?
Why is running at high altitude so hard?
Should you use an elevation training mask to prepare for high-altitude running?
How to deal with dehydration, sleep issues, appetite suppression, and GI upset at high altitude
How to modify runs and workouts for high-altitude
How long does altitude acclimatization take?
References:
Cheung, S. & Ainsile, P. (2022). Advanced Environmental Exercise Physiology. Human Kinetics, 2nd ed.
Ehrman, J., Kerrigan, D., & Keteyian, S. (2018) Advanced Exercise Physiology.: Essential Concepts and Applications. Human Kinetics.
PMID: 9216951
PMID: 31691928
PMID: 29431471

Oct 28, 2023 • 35min
Episode 38: How to Run Your Best 10K Race
In our opinion, the 10K is one of the most underrated distances to race and train for. It’s long enough to require endurance but short enough that you need to develop your speed. This episode is focused on everything you need to know if you want to race a 10K, including:
How long should you train for a 10K?
How to set a 10K goal pace
Should you taper for a 10K race?
Our favorite 10K workouts
Mindset for racing a 10K
How to pace a 10K race
How to warm up before a 10K race
How to fuel for a 10K
Further resources:
Daniels VDOT Calculator: https://vdoto2.com/calculator/
Tinman Calculator: https://runfastcoach.com/calc2/index.php
https://lauranorrisrunning.com/run-your-fastest-10k/
https://lauranorrisrunning.com/10k-training-plan-for-intermediate-to-advanced-runners/
https://lauranorrisrunning.com/how-to-pace-10k-race-5k-race/
https://www.runtothefinish.com/10k-pace-chart/
https://www.runtothefinish.com/tips-for-running-a-10k/
References:
https://journals.humankinetics.com/view/journals/ijsnem/29/2/article-p117.xml
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10171681/

Oct 21, 2023 • 34min
Episode 37: Trail Running Tips for Road Runners
Want to start running more on the trails or curious about trying a trail race? This is the episode for you! We talk about tips for train running to help you get out on the trails and enjoy the experience. These trail running tips and techniques are based both on our coaching experiences and own experiences as two road runners who also run on trails.
Running by time versus distance on the trails
Is it okay to walk when running on the trails?
Running form for trail running
How to navigate running trails
Animal encounters during trail running
Nutrition and hydration for trail runs
Gear for trail running
How to incorporate trail running into your training
Exercises for trail running
How to pick trail running shoes
Further resources:
https://www.trailrunproject.com/
https://www.runtothefinish.com/how-to-prepare-for-your-first-trail/
https://www.runtothefinish.com/how-to-find-running-trails/
https://www.runtothefinish.com/trail-vs-road-running/
https://lauranorrisrunning.com/how-to-pick-the-best-trail-running-shoes-for-you/
https://lauranorrisrunning.com/trail-running-tips-road-runners/
https://lauranorrisrunning.com/how-to-successfully-venture-into-trail-racing-as-a-road-runner/
https://lauranorrisrunning.com/the-best-hydration-vests-for-runners/

Oct 14, 2023 • 30min
Episode 36: Understanding Your Running Gait
Is a heel strike as bad as people say? How much does your running cadence actually matter? What is the proper running form for your feet? We answer those questions - and more - in our discussion on running gait.
Discussion points include:
Is there an ideal running cadence?
Should you change your running cadence?
What is vertical oscillation?
Is there an ideal footstrike pattern?
Is a rearfoot strike (heel strike) bad for you?
Do you need a running gait analysis?
What are overpronation and supination?
Our top tips for improving your running gait
We also answer a listener’s question on how to start trying running gels! The study in the European Journal of Sport Science is cited below in the reference list.
Further reading:
https://www.runtothefinish.com/stride-analysis-your-stride-is-a-running-fingerprint/
https://lauranorrisrunning.com/improving-running-cadence/
https://www.runtothefinish.com/running-cadence/
https://www.instagram.com/p/COKvTFzMc_5/
References:
PMID: 37115611
PMID: 25729311
PMID: 27501719
PMID: 30543498
PMID: 34757569

Oct 7, 2023 • 30min
Episode 35: Increasing Women's and Girl's Participation in Running
We tackle an important topic in this episode: women's and girls' participation in running. How do we encourage young girls to stick in sport? How do we encourage adult women to participate in running despite barriers - and what are those barriers? How do we initiate more conversations around women's issues in running?
Discussion points:
The importance of watching female sports
Domestic labor statistics and what they mean for sport participation
The recent history of women’s participation in running
How to encourage young girls to participate in sport and running
How to encourage adult women to participate in sport and running
References:
https://news.gallup.com/poll/283979/women-handle-main-household-tasks.aspx
https://www.researchgate.net/publication/364141158_Exploring_Women%27s_Marathon_Participation_in_the_United_States_1980-2019
Christine Yu (2023). Up to Speed. (purchase here)

Sep 30, 2023 • 33min
Episode 34: How to Increase Your Running Mileage
Topics include increasing running mileage, using the 10% rule, the Jack Daniels method, adjusting energy intake, incorporating cutback weeks, importance of recovery, conservative vs aggressive mileage increase