Disclaimer: The advice in this article is general coaching content and not medical advice. See full medical disclaimer in the footer.
“Have I peaked?” It’s a quiet thought that creeps in after a race. Maybe your PB hasn’t shifted in a few years. Maybe recovery feels slower. Maybe runners ten years younger seem to pull away more easily than they used to.
If you’re in your 40s (or beyond) and asking, “Am I too old to get faster?”, you’re not alone.
Getting older does change running performance. But it doesn’t mean improvement is over. I often say to my runners:
“Improvement doesn’t stop at 40. It just requires smarter training.”
Let’s break down what actually changes and how midlife runners can continue to improve.
First, let’s address reality without fear. Let’s start by looking at the facts. It’s important to understand what changes as we age so we can adapt our training to overcome these new challenges. By acknowledging reality, we empower ourselves to train smarter, not just harder, and continue chasing our running goals with confidence.
Aerobic capacity (VO₂ max) typically declines with age, especially if training becomes inconsistent. Research suggests an average drop of around 5 to 10% per decade if untrained.
But here’s the key:
Trained runners slow that decline dramatically.
Sedentary ageing is not the same as trained ageing.
After turning 40, we naturally start to lose muscle mass, especially the fast-twitch fibres that are crucial for speed.
If you neglect strength work, you might notice a decline in your speed, power, running economy, and resilience to injury.
The good news? With targeted strength training, you can significantly slow this process and sometimes even reverse it.
You might notice that DOMS (Delayed Onset Muscle Soreness) tends to last longer than it used to, back-to-back hard training sessions feel increasingly difficult, and those small, nagging injuries seem to stick around longer than expected. These changes can be frustrating and might even make you question your endurance or strength.
But this isn’t a sign of weakness or a lack of effort. It’s simply a reflection of your physiology adapting to the natural changes that come with midlife.
Both men and women experience hormonal changes after 40, which can influence sleep, energy levels, body composition, and motivation.
For female runners, perimenopause and menopause add another layer of adaptation, but many women find that running becomes a powerful stabiliser during this phase.
Now for the part that most runners overlook, and it’s where the real magic lies. While it’s easy to focus on what’s changing, it’s far more powerful to recognise what stays strong and what can actually get better with age.
Endurance is highly trainable, even in your 40s and 50s. In fact, this is where many experienced runners have a distinct advantage.
If you’ve been running for a decade or two, you’ve built an incredible aerobic foundation. Your body has undergone years of deep capillary development, creating a rich network of blood vessels to deliver oxygen to your muscles. Your mitochondria – the powerhouses of your cells – are highly adapted and efficient at producing energy.
In simple terms, you’ve spent years building a powerful and efficient engine. While you might lose a fraction of top-end speed, your capacity for endurance can continue to grow. This is your superpower as an older runner. Your body knows how to run for a long time, and that’s a skill you can keep honing for years to come.
With age comes a wealth of mental strength that younger runners simply haven’t had the time to develop. You’ve learned the hard lesson of starting too fast and paid the price. You’ve pushed through the tough miles when your body screamed at you to stop. This gives you better pacing discipline, stronger emotional control, and greater resilience when the race gets tough.
As marathon runner Stu Taylor often reminds runners:
“Experience counts in the final 10K of a marathon.”
That hard-earned race awareness often matters more than raw youth.
Midlife runners tend to train more deliberately, approaching their workouts with a sense of purpose and intention that often comes with experience and maturity. This thoughtful approach allows them to train smarter, not harder, and reduces the risk of burnout or injury.
Additionally, midlife runners tend to have a greater respect for recovery, understanding that it is just as important as the workouts themselves. They listen to their bodies, prioritise rest, and incorporate recovery strategies like stretching, mobility work, or cross-training to ensure longevity in their running journey.
Ultimately, this combination of deliberate training and proper recovery fosters consistent improvement, allowing midlife runners to continue growing stronger, faster, and more resilient with time.
It may surprise you, but many runners hit lifetime bests in their early-to-mid 40s. It might seem counterintuitive, but it’s a reality I’ve seen time and again, both in my own running and with the athletes I coach: many runners don’t just maintain their performance into their 40s, they actually hit new personal bests.
If you thought your fastest days were behind you, think again. Your best run truly could still be ahead of you. So, what’s the secret? Let’s explore why this decade can be your strongest yet.
In your 20s, success may come from natural speed. In your 40s, it comes from structure and consistency – often delivering even better results.
Instead of simply running, midlife runners tend to follow structured training plans, monitor heart rate zones, track their pacing, and incorporate strength training into their routines. Precision takes the place of guesswork.
Many runners in their 40s find themselves in a more stable lifestyle. They often sleep more regularly, drink less, eat more consciously, and prioritise their health in a way that wasn’t possible in their younger years. That stability creates huge performance potential.
Here’s an uncomfortable truth: it’s rarely age alone that causes runners to slow down. It’s unchanged training.
Here at Coach the Run, we often see runners making the same mistakes: training like they did when they were 25, tackling too many hard sessions, ignoring strength work, skipping mobility, racing their long runs, and forgetting to build in recovery weeks.
But midlife rewards precision, not just volume. If you don’t evolve your training, stagnation follows.
The good news is that with a few smart adjustments, you can reverse the trend and start setting new personal bests. I’ve worked with countless runners over 40 who are now faster than ever before. It’s not about magic; it’s about shifting your focus from simply logging miles to training with intention. Let’s break down the practical changes you can make to your routine.
As we age, recovery isn’t just rest; it becomes a vital performance tool. I often see runners making significant improvements simply by doing less intensity, but doing it better. This means limiting yourself to a maximum of one or two hard sessions per week and ensuring your easy runs are genuinely easy, not just a moderate effort.
It’s also crucial to incorporate deload weeks every four to six weeks to allow your body to adapt and strengthen.
Finally, start treating sleep with the same importance as your training sessions; it’s when the real magic happens.
Strength training at least twice a week is essential, especially for midlife runners. Prioritise areas like glutes, hamstrings, calves, and core stability to build a strong foundation.
This type of training helps protect muscle mass, enhances running efficiency, reduces the risk of injury, and supports long-term speed. It’s not just beneficial; it’s a necessity.
Threshold training becomes especially effective after 40. Rather than relying on constant high-intensity intervals, prioritise tempo sessions to build your lactate threshold. Incorporate controlled VO₂ max efforts sparingly for better results.
Train smarter, not harder.
The long run is the cornerstone of training, but it’s important to approach it wisely. Avoid treating every long run like a race, practice your fueling strategy, and focus on gradually building durability. Stay consistent and resist the urge to let ego dictate your pace. Longevity always wins over chasing hero miles.
Yes, but it depends on factors like your training age, injury history, consistency, recovery habits, and willingness to adapt.
The goal isn’t to feel 25 again; it’s to be the best version of yourself at 45. Many runners even find they’re more capable now than they were when they were younger, thanks to smarter, more intentional training.
Consider seeking additional support if you find yourself dealing with recurrent injuries, persistent fatigue, or a performance plateau that has lasted 12 months or more. It’s also a good idea if you feel uncertain about how to structure your training effectively.
Sometimes, an experienced coach can see what you can’t, and even small adjustments can unlock significant progress.
“Coaching is about understanding the individual runner and age is just one variable.”
Mike Gratton – London Marathon winner 1983
Interested in 1:1 online personal coaching with our Head Coach, Mike Gratton?
With years of experience and a passion for helping runners achieve their goals, Coach Mike will provide tailored guidance to help you improve your performance, whether you’re training for your first 5K or looking to set a new personal best in a marathon. Our programme is designed to give you the tools, motivation, and expert advice you need to succeed.
Learn more about how we can help you unlock your full potential!
The greatest performance leap after 40 isn’t physical, it’s mindset. Success shifts to sustainable improvement, staying injury-free, balancing ambition with family, and focusing on the long game.
If you want a clear starting point:
Consistency + recovery + strength = progress.
Absolutely not.
In fact, you’re too experienced to keep training like you’re still in your twenties. Running after 40 isn’t about fighting against the clock; it’s about working with your body, using the wisdom you’ve gained over years of running.
When you learn to adapt intelligently, you’ll often find that your strongest, most fulfilling years of running are still ahead of you.
Explore our structured training plans designed specifically for midlife runners. If you’re a midlife runner looking to take the guesswork out of your marathon, half-marathon, 10k or 5k preparation, our structured training plans are designed for you.
For those wanting a more bespoke experience, consider 1:1 online personalised coaching with me, Mike Gratton. We’ll work with you to build a plan that fits your life and unlocks your potential.
Because improvement doesn’t stop at 40.
It just gets smarter.
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