How long does it take for your legs to get used to running?

Author: Leonie Green  |  Last update: Friday, January 23, 2026

On average, it takes about 4 to 8 weeks for an individual to adjust to running, with the final timeframe influenced by factors such as current fitness level, age, and obesity. With a consistent and appropriate training regimen, your legs will acclimate to the demands of running.

How do I get my legs used to running?

Try running three days a week rather than four, and consider adding cross-training to your plan. You could cross-train one or two days a week by swimming, weight training, spinning, or taking core exercise classes in addition to running. Cross training will boost your overall fitness while giving your legs a break.

How long does it take for your legs to adapt to running?

Running is physically demanding, so your body likely has to get used to it. A general rule of thumb is that it takes two to six weeks for running to start getting a little easier for you. It may take up to three months before it begins to feel noticeably easier.

Will my legs ever stop hurting when I run?

It's natural to feel a little tight or sore as you start your run, especially if you frequently train rigorously. If these aches don't subside or become painful as you continue running, this may be a sign that there's an underlying injury. Consider contacting a doctor if you have tightness or leg pain after running.

How many runs until it gets easier?

Your body needs time to adapt, and for a new runner this is generally about 4-6 weeks. Trust us, we've been there. Those first few runs might feel like you're dragging yourself through molasses, every step an effort.

Running Form: Correct Technique and Tips to Avoid Injury

What is the 80% rule in running?

This method advocates that 80% of your training should be easy and the remaining 20% should be hard. The exact split of easy to hard runs depends on several factors, including the number of runs you do each week, your personal fitness level and any training you do outside of running.

Why is the first 20 minutes of running so hard?

When you start running, your muscles are cold and stiff, and your body isn't used to the increased activity. Your heart rate and breathing rate increase to provide your muscles with the oxygen and nutrients they need, and your body starts to produce energy from stored glycogen.

Is it good to run on tired legs?

A light jog may be acceptable if the soreness is for just a few hours or minutes, feels more like fatigue than pain and doesn't worsen during the run. However, sharp or increasing pain or other aches, such as stomach pain when running, should be a red flag to abstain.

How often should I run per week?

For example, someone with ample running experience may choose to run every single day. But those coming back from injury, or just starting out, should start with just 1 or 2 days per week. If you are an experienced runner, you may be able to run 5 to 7 days per week, depending on how many miles you log each day.

How do I run so my legs don't hurt?

Here, in a nutshell, are my 10 best tips for diminishing pain while running: short strides; mid-foot landing; new shoes, well-fit with ideal cushions; a full range of motion; flexibility; strong muscles; upright posture; soft running surfaces; well-hydrated, lubricated bodies; healthy joints.

How quickly does running change your body?

As a rough guide, you'll probably notice some initial changes in the first four to six weeks, but longer-term changes (what you're working toward) will often take around eight to 12 weeks. The good news is that you're likely to start feeling better quickly.

How can I run longer without getting tired legs?

Once you feel fatigue in your legs, you'll need to adjust your running style to keep on running. A longer stride can place additional stress on your legs as they're having to cover a greater distance with every step. A shorter stride with more frequent and quicker steps can help you run longer and fatigue-free.

Why is it so hard to run after leg day?

Plus, a hard leg day can take as much as a day or two more to recover from than a high-intensity run. “Resistance training-induced stress can hamper the muscle's ability to contract optimally, which is vital for any type of movement, including running,” he tells Runner's World.

How long until you get used to running?

With consistent training and gradual progression, you'll likely start feeling the benefits and experiencing increased endurance and ease of running within a few weeks to a couple of months.

What is running leg syndrome?

Restless legs syndrome (RLS) is a condition that causes a very strong urge to move the legs. The urge to move usually is caused by an uncomfortable feeling in the legs. It typically happens in the evening or at night when sitting or lying down. Moving eases the discomfort for a short time.

How do I activate my legs before running?

Pre-Run Activation Drills to Keep You Running Your Best!
  1. Walking knee hug. Take three steps between each knee hug, alternating legs. ...
  2. Walking Frankenstein. Opposite hand to opposite leg. ...
  3. Hip opener. Bring leg up, out, and around, then in reverse. ...
  4. Single-leg RDL. ...
  5. Lunge walk. ...
  6. Heel/toe walking.

Is running 2 miles a day enough?

Running 2 miles a day has many health benefits and can be very motivating. And since it's easier to sustain than other running plans, it's a good way to get you moving every day.

What physique does running give you?

You will have stronger legs from running

When we run, we use all the muscles in our legs, big and small. If you are new to running, you might be surprised by how quickly you start to develop lean muscle in your legs and the speed at which you build endurance.

Is running 7 days a week bad?

Many running experts recommend running no more than four days a week. More than that, and all the repetitive impact may take a toll on these lower-body muscles.

Do legs get toned from running?

Yes, running can help you sculpt toned and defined leg muscles, particularly in the quads, hamstrings, and calves. The repetitive nature of running engages these muscles, promoting muscle growth and definition. However, it's important to combine running with strength training exercises for optimal leg toning.

How to get faster at running?

Here are 5 useful methods to improve running speed, whatever your level:
  1. Interval training.
  2. Add sprints into your long runs.
  3. Choose lightweight running shoes and gear.
  4. Skipping rope workouts.
  5. Build your strength.

How do you know if you're overtraining?

When you're trying to tell if you're dealing with overtraining, consider these common symptoms:
  • Your Performance Declines. The hallmark sign of overtraining, Dr. ...
  • Fatigue and Soreness Ramp Up. ...
  • You Get Sick or Injured More Easily. ...
  • Sleeping Gets Harder. ...
  • Your Mood Changes. ...
  • Other Physical Symptoms Pop Up.

What is toxic 10 in running?

There will always be what we call the 'toxic ten' minutes' when your body is adjusting to the demands of running and it feels horrible. That will happen, whatever distance you run. Just know that it does go away and that once you get beyond it then running is so much easier. There is so much support out there for you.

What is the hardest part of running?

The 16 Hardest Parts About Being A New Runner
  • Not knowing what you're doing.
  • Trying to find the right pair of running shoes.
  • Sore muscles…all the time.
  • Being really, really, really slow.
  • Trying to figure out what to wear on a run so you're not over/under dressed.
  • Feeling winded the entire time.
  • Intimidating distances.

At what age does it become harder to run?

Metabolism and muscle growth start to slow in our 30s

“I've watched athletes in their 80s sprint and do it fairly well,” Mackey says, pointing out that even at the professional level, it's now normal for men and women to be world-class competitors in their early 40s.”

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