80/20 is among the hottest coaching ideas on the market and sometimes the very first thing you’ll see if you begin researching working plans. However does it work for everybody? Our reply beneath could shock you.On a latest episode of the Tread Flippantly Operating Podcast, we chatted with Jonah Rosner of Rosner Efficiency. As a sports activities scientist, Jonah has hung out working in a lab targeted on endurance physiology, giving him a deep understanding of how the physique adapts to coaching.
All through his profession, he’s labored with a wide range of sports activities groups earlier than narrowing his focus to working. His purpose is to use the most recent science and know-how in a sensible means to assist runners optimize distance working efficiency.
We’ve damaged down a few of our dialog beneath, however ensure that to take a look at the total episode for the entire deep dive into why 80/20 coaching doesn’t work for everybody.
What does 80/20 imply?
Chances are you’ll be conversant in the 80/20 coaching idea, particularly in case you’ve learn Matt Fitzgeral’s e book, 80/20 Operating. However let’s check out what it means in case you’re new to this coaching model.
The 80/20 idea comes from observational analysis on elite endurance athletes. Researchers began to note a sample:
- about 80% of their exercises have been finished at a really low depth beneath their first lactate threshold
- about 20% of their exercises have been accomplished at a really excessive depth, above the second lactate threshold
On the time, this wasn’t a prescribed technique to prepare. It was merely the way in which elite athletes balanced their coaching whereas rising their coaching masses.
Preserving nearly all of their coaching straightforward allowed them to handle fatigue, keep away from burnout, and nonetheless embrace onerous high quality classes.
Many coaches, together with the RTTF Teaching group make the most of this normal thought of 80% straightforward and 20% something that’s not straightforward to assist stability total work load for many athletes. BUT there’s some nuance to this.
Does 80/20 Work for Everybody?
The one factor we frequently lose sight of, particularly because of social media, is that coaching isn’t “one measurement matches all”. And that’s precisely the case with 80/20.
Your coaching quantity, working historical past, genetics and private targets all come into play.
For runners who’re already used to the next weekly mileage, much like the elite athletes within the authentic analysis, 80/20 could be an effective way to stability depth whereas managing fatigue.

However there are additionally occasions when 80/20 isn’t the fitting coaching choice.
When you’re solely working just a few hours per week, or working isn’t your fundamental focus, sticking to an 80/20 break up probably gained’t work. In that case, you would possibly truly discover you could veer into 30-35% of your mileage being something from Zone 3 to Zone 5 coronary heart price (i.e. not straightforward).
That is the place the nuance of the dialogue turns into actually essential!!
Whereas within the authentic information we thought of the 20% to be actually onerous exercises, for runners chasing a half marathon or marathon PR there must be an honest period of time in that center floor of Zone 3. Due to this the chance exists to do greater than 20% of quantity at depth.
In the meantime in case you’re new to working, getting back from an damage, or rebuilding after time away, your focus must be on straightforward working. Jonah mentioned that 100% straightforward efforts assist to construct sturdiness and decrease the danger of overuse accidents earlier than layering depth afterward.
Can You Prepare for a Marathon with 80/20?
TL;DR: 80/20 is a useful guideline, however not a must-follow rule in relation to marathon coaching. A coaching plan must be adjusted to your targets, weekly mileage, coaching historical past, and most significantly, how nicely your physique recovers.
Let’s check out the distinction between first-time and seasoned marathoners.
👉First-time Marathoners
Marathon coaching locations loads of stress on the physique, particularly if you’re rising mileage for the primary time.
An important purpose isn’t hitting an ideal depth break up; it’s attending to the beginning line wholesome. That usually means maintaining nearly all of your coaching at a simple effort, constructing sturdiness, and easily getting extra time in your ft.
As your coaching progresses and your physique adapts, you may start including Zone 3 work to assist put together for race day.
However consistency and gradual development matter excess of following a precise 80/20 break up. Simple working permits your physique to deal with the coaching load and get better so you may hold displaying up week after week.
Checkout our newbie marathon coaching plan >>

👉Seasoned Marathoners
Even with expertise beneath your sneakers, 80/20 isn’t a one-size-fits-all rule. Marathon efficiency relies on extra than simply straightforward mileage, so coaching ought to mirror the calls for of sustaining effort over 26.2 miles.
Simple runs assist restoration and quantity, whereas more durable efforts at purpose marathon effort (zone 3) assist put together you for race day.
Somewhat than boxing your self into an 80/20 break up, seasoned marathoners profit extra from adjusting depth primarily based on quantity, fatigue, and restoration. Usually (not simply with the marathon), flexibility results in higher outcomes than following strict guidelines.
Don’t do greater than you may get better from! Which suggests you will need to dial in sleep and diet to even contemplate going over 20%, however after that you simply would possibly reap some massive rewards.
Various Coaching Choices to 80/20
Take heed to the podcast for full particulars and a full understanding of the way to work exterior of this paradigm and when it’s going to work greatest.
When you’re considering 80/20 will not be the best choice for you, listed below are a few different coaching choices that will higher match your targets.
Pyramidal Coaching
Pyramidal coaching nonetheless facilities on straightforward working however contains extra moderate-effort exercises than a strict 80/20 break up.
As a substitute of solely straightforward runs and difficult exercises, you spend extra time within the center zones, like Zone 3, which may higher put together your physique for race day with out including further fatigue.

Maffetone Technique aka Low Coronary heart Price Coaching
When you’ve been right here some time, you realize that is the Low Coronary heart Price coaching that Coach Amanda talks about all the time.
The Maffetone Technique retains your whole exercises beneath your max MAF coronary heart price, permitting you to construct a powerful cardio base earlier than shifting into one thing like 80/20 coaching.
It’s easy in idea, however it does require loads of persistence, particularly within the first few weeks.
Slowing down is a part of the method, and sticking with it lets you actually perceive what a simple tempo ought to FEEL like vs. all the time relying in your watch.
Wish to give it a strive? Take a look at our Low Coronary heart Price course with a number of plans that will help you via the method.

Okay, that was loads of info and possibly not what you have been anticipating to listen to about 80/20 working. It’s a great reminder to perform a little extra analysis, particularly on these scorching matters you see on social media.
To take heed to our entire dialog about 80/20 coaching with Jonah, you’ll have to move to the Tread Flippantly Operating Podcast.
What to learn subsequent?
