The Long Run Mistake That Keeps You Stuck

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I skipped long runs for years—and paid for it in every race.

Most runners either skip them like I did… or run them too hard.

Both will keep you stuck.

Here’s what I wish I knew 25 years ago when I started distance running.

Why You’re Doing Long Runs Wrong (And How to Fix It)

WHAT YOU’LL LEARN

Look—this isn’t just another “run slower” video.

This is about unlocking what long runs are really for.

  • Why most runners misuse or skip long runs entirely
  • The biggest myth that keeps you feeling flat on race day (with real science behind it)
  • Five proven long run formats with pacing tips and purpose
  • How to train longer… without getting slower or burned out
  • And a free training plan that lets you test out all 5 long run styles

What is a long run, anyways?

Here’s where things get interesting. A long run is any run that’s longer than your normal daily training—but what “long” actually means depends entirely on context.

From a science perspective, researchers usually define it as a run that makes up about 20 to 30% of your weekly mileage, or pushes you past the point where your body starts running low on stored carbs and has to adapt.

Long runs trigger mitochondrial growth (more energy), better fat metabolism (more fuel), and increased capillary density (better blood flow).

It’s like upgrading your body’s MPG—same engine, better fuel economy so you can run longer, farther or faster without getting as tired.

From a real-world runner’s perspective? It’s all over the map:

In my off-season, my “long run” might be 45 to 60 minutes—just enough to keep the aerobic engine humming without beating myself up – and keeping me sane becuase Sundays are for going long and easy and enjoying this running think without suffering.

During 5K training, it stretches to maybe 75 to 80 minutes because I need that aerobic base even for shorter, faster races.

In marathon prep, I’ll touch 2.5 to 3 hours because the demands are completely different.

And here’s a pro move: half and full marathoners often throw in a medium long run midweek. It’s like having two different tools for two different jobs.

As for intensity on your long runs? That’s completely choose-your-own-adventure. Long runs can be easy, moderate, or even hard, depending on the style you’re using and what you’re trying to accomplish. Both easy and hard long runs come with risks though. If you go too easy, you might not have enough fitness to run your best time. IF you go to hard, you can burn yourself out or get injured.

Tread lightly.

Hard fact: A long run isn’t defined by some present notion that all long runs have to be a certain distance so that you get kudos on Strava. It’s defined by context. It’s the run that stretches you a little further than usual, at the right time, for the right reason.

MYTH: LONG RUNS MUST BE SLOW, BORING SLOGS

Now here’s the big misconception: Many runners assume a “long run” must be a monotonous slog at snail’s pace.

This limiting mindset keeps people stuck: “Just go slow and endure it as long as possible.”

The problem with this thinking? Same pace equals same adaptation. Your body is incredibly smart—it adapts to whatever you consistently throw at it. If you only ever run long and slow, you get really good at running long and slow. But as I said a few minutes ago, when race day comes and you want to run your best time and you need to sustain a faster pace for a long duration, your body has no idea what you’re asking it to do.

On the flip side, some runners go completely the other direction and punch out every long run like it’s a weekly time trial. This leaves them chronically tired and injury-prone or ready to catch whatever cold and flu is lingering around them that they would usually fight off.

Both approaches miss the point entirely. Long runs aren’t about surviving—they’re about adapting. And different adaptations require different stimuli.

Study link

Here’s what a smart run science GOAT named Stephen Seiler’s research really shows us. Elite athletes do about 80% of their training easy—but that other 20% is where the magic happens.

They’re strategic about when and how they apply stress to their systems.

The key insight? It’s not that long runs should always be easy. It’s that they should be intentional.

TRANSITION: When I figured that out, long runs stopped being this thing I dreaded and became the most interesting part of my training week. Because suddenly, I had options.

5 LONG RUN STYLES ARE YOUR TOOLKIT

Here’s the 5 long runs that I use all year long and these become tools in my running toolbox.

I’ll be going over:

  • The Easy Long Run
  • Cupcake with Sprinkles
  • The Big Block Sandwich
  • Over Unders
  • Progression Long Run

Let’s dive into each more in depth.

All Easy (+ Fast Finish Bonus) Level 1

This is your bread and butter—60 to 90 minutes (or more depending on where you are in the year) at a pace where you can hold a conversation without gasping. Start at zone 1 and end at mid zone 2.

The bonus move: Add a 1-2 minute fast finish or 4x 10-15 seconds strides. Nothing crazy, just pick up the pace right at the end to dust out the cobwebs.

This wakes up your nervous system and teaches your legs to respond when they’re already tired.

What’s happening under the physiological hood? As I said before, you’re building more mitochondria… the powerhouse of… you get it. You’re also growing more tiny blood highways called capillaries that deliver oxygen and remove waste products more efficiently.

Better delivery system means your muscles can produce energy more effectively. Think of it like upgrading your body’s power plants and installing faster internet cables—everything just runs smoother and more optimal.

Perfect for base building phases or recovery weeks when you need the miles without the stress.

Cupcake with Sprinkles – Level 2

Purpose: This adds random bursts of speed into an easy run. It helps you switch gears smoothly and builds your ability to handle race-day fatigue.

How To Do it: Start with an easy base run (the yellow or chocolate cake), then sprinkle in faster efforts throughout. Maybe 30 seconds to one minute at 5K pace every 5-10 minutes, or 1K surges every 3K. It’s up to you and shouldn’t be perfect.

Kinda fartlek with more structure and more speed. Just waking up your body.

Think of it like interval training disguised as a long run. Your body learns to shift gears without freaking out, and you build the kind of fatigue resistance that matters in real races.

The beauty is in the unpredictability. Your body never fully settles into one rhythm, so it gets better at adapting on the fly—just like racing.

Progression Runs – Level 3

Purpose: Learn to finish strong when you’re already tired

How To Do it: Start easy, then gradually ramp up the pace until you’re running at threshold or even 5K pace for the final 20-30%.

Back in 2018 this clicked for me. I was training for a half marathon and did a progression run where the last 3 miles felt controlled but strong. I didn’t think I could run that fast – got up to my 5K pace for the last 2 miles.

Race day came, and for the first time ever, I actually got faster in the second half instead of hanging on for dear life.

Reverse progression (Pro Level): Start at a comfortably hard pace (after proper 15 minute warmup!), then slow down as fatigue sets in.

What it teaches: Your body can access higher gears even when tired. Your brain learns “I have more left than I think.”

The Big Block Sandwich – Level 4

Purpose: Build sustained pace endurance and mental toughness

How To Do it: One large, steady state effort in the middle: 20-40 minutes (or longer) at (usually high zone 2 or low zone 3 aka marathon pace or slightly slower) sandwiched between easy running.

Unlike progression (which gets faster) or Over Unders (which has multiple pace changes and i’ll talk about next), this is about holding one uncomfortable pace for an extended time just like a race

What it teaches: “I can maintain steady discomfort for a long time without breaking.” Builds the specific endurance and mental fortitude for longer races where you need to suffer at one pace.

TRANSITION:

Each style trains something different. You rotate them based on your goals and where you are in your training cycle.

And miraculously, long runs stop being something you survive and become your secret weapon.

Over Unders – Level 5

Purpose: Build pace control and learn to recover while still running hard

How To Do it: Alternate between two paces throughout your long run : 10-20 seconds per km/mile slightly faster than your goal race pace (“over”), followed by 10-20 seconds per km/mile slightly slower than race pace (“under”).

Repeat this pattern for 30-60 minutes in the middle of your long run.

Example: If your goal marathon pace is 6:00 min per mile/km, run 10 minutes at 5:45 min per mile/km pace, then 10 minutes at 6:15 pace. Keep cycling through.

What it teaches: How to surge and recover during races without completely falling apart. Your body learns to clear lactate while still running hard, and your brain gets comfortable with pace changes under fatigue.

The slight slow down while, on paper looks like nothing, will be welcomed by you every cycle.