Why You’re Not Getting Faster as a Runner — And How to Break Through the Plateau

If you’ve been running regularly, putting in the miles, doing the races… yet your pace isn’t improving, you’re not alone. Almost every runner eventually hits the frustrating “I’m stuck” phase.

The good news? A plateau isn’t a dead end — it’s a sign your body needs a new stimulus, smarter structure and some strategic tweaks.

This guide blends the latest research (including recent findings published in Cell), coaching insights from Runner’s World interviews, and the science-driven framework of elite coach Greg McMillan, M.S., to help you understand why you’re not getting faster — and exactly what to do about it.

Why Runners Plateau: What the Science Says

1. Your body prefers “energy-saving mode”

The Cell study analysing 37,000+ real-world runs found that humans instinctively settle into an optimal, calorie-efficient pace — even when distances change.This is an evolutionary survival mechanism: we maintain a comfortable, economical speed rather than naturally pushing into faster, more demanding zones.

Translation: Your body is wired NOT to run faster unless you deliberately train it to.

Music with a slightly quicker beat or running with someone a bit faster can nudge your stride frequency higher — but structured training is still the biggest needle-mover.

2. You’re doing the same training over and over

Running the same route, same pace, same distance? You’re not stressing your aerobic system in new ways, so it adapts — and then stops improving.

As exercise physiologist Susan Paul explains:“When we reach the top of our aerobic capacity, performance levels out. To get faster, you must train faster.”

Fix: Add targeted speedwork

Start with one speed session per week, for example:

Option 1: Interval Session

• Warm up: 1–2 miles easy

• Main set: 3–5 miles total of intervals at 10k pace or 30–45 seconds faster per mile than your goal pace

• Cool down: 1 mile easy

Option 2: Tempo / threshold workThis improves your lactate threshold — the cornerstone of speed endurance.

3. You’re avoiding hills

Even if your races are flat, hills build:

• Strength

• Power

• Stride efficiency

• Hip mobility

• Mental resilience

Suggested weekly hill session, for example:

Hill Repeats

• Run uphill at RPE 7/10

• Jog or walk down

• Repeat 4–6 times

This builds the muscular power that later translates to flatter, faster running.

4. You’re not including strides

Strides are one of the most underrated tools for teaching your body how to run faster.

Unlike sprints, strides gradually accelerate over 30 seconds and then ease off again.

Benefits:

• Improve neuromuscular coordination

• Rewire your brain–muscle connection

• Build speed safely

• Teach better posture and form

Do 4–6 strides at the end of an easy run once or twice a week.

5. You only run — no cross-training

Running builds running fitness… but not everything you need to get faster.

Cross-training like cycling, rowing, strength work or swimming builds:

• Power

• Muscle endurance

• Cardiovascular efficiency

• Joint resilience

Cycling in particular recruits quads, calves and glutes in different ranges than running, giving you a “shared strength base” across both sports.

6. You’re not mentally practising faster running

• Many runners push too hard in training (sprinting) or stay too comfortable (always steady).

• Strides, controlled intervals and tempo runs train the mental skill of handling faster paces.

• Speed is a learned sensation — and your brain must be coached to stay relaxed while going faster.

How to Break Through the Plateau: A Practical 6-Step Plan

Slow your easy runs down: 80% of your training should be conversational pace — this preserves energy for actual speedwork.

Add ONE speed session per week: Rotate between intervals, tempo runs and progression runs

Add weekly strides: Do them after an easy run:4–6 × 20–30 seconds, gradually accelerating.

Include strength and mobility training: Especially glutes, hips, core, hamstrings and calves.

Add a weekly hill session: Or incorporate “rolling terrain” if you’re new to hills.

Follow a structured plan: Ensure you have a balance of:

• Endurance

• Speed

• Stamina

• Recovery weeks

Final Thoughts: You Can Get Faster — With the Right Strategy

A running plateau doesn’t mean you’ve reached your limit.It simply means your body has mastered your current routine.

Speed comes from:

• Variety

• Strategic stress

• Consistency

• Recovery

• Mental training

• Strength and mobility

• Purposeful structure

  
  

Whether you’re training for a 5k or a marathon, applying even a few of the strategies above can unlock the next level of performance.

Who is Greg McMillan?

Greg McMillan, M.S., is one of the world’s most respected running coaches. He is:

• A physiologist with a master’s degree in exercise science

• Former elite runner

• Creator of the famous McMillan Running Calculator

• Coach to Olympic Trials qualifiers, beginners and masters athletes

• Known for blending exercise science + real-world coaching + individualisation

His philosophy is rooted in proven stress–adaptation cycles and understanding the type of runner you are.

The Science Behind the McMillan Training System

McMillan’s methods revolve around several key principles:

1. Training must hit all “energy systems”

To run faster, you must train:

• Endurance

• Speed

• Stamina

• Sprint mechanics

• Aerobic capacity

• Neuromuscular coordination

Repeating only easy miles trains just one of these.

2. Every runner has strengths and weaknesses

McMillan categorises runners as:

• Speedsters (naturally fast, struggle with long endurance)

• Endurance monsters (naturally strong on long runs but slow)

• Neutral (balanced)

Your training should complement your weaknesses — not just play to your strengths.

3. Workouts should follow the “just right” rule

Not too hard. Not too easy. Just right to stimulate adaptation.

A plateau usually means the body is no longer receiving the “just right” stress — or it’s receiving too much and cannot recover.

4. Specificity matters

To get faster at a target pace, you must train at — or near — that pace.Hence the importance of:

• Tempos

• Goal-pace intervals

• Long runs with fast finishes