8 tips to avoid tired legs when running

Isabel del Barrio 5 min. of reading Running Leave a comment

It’s pretty common for runners starting out to feel heavy, tired legs, and even some muscle discomfort. The first thing to figure out are the possible reasons for tired legs when running:

Lack of recovery: Overtraining, not enough rest, and muscle inflammation.
Poor blood oxygenation – capillary network: Bad blood circulation means tissues don’t get enough oxygen or nutrients, so when you run, oxygen doesn’t reach them properly.
Spending many hours standing or sitting: Staying still in one position for hours straight messes with blood flow, causing swelling and fluid retention.
Wearing clothes that are too tight: They block good blood flow and venous return, directly affecting oxygen supply when you start running.
Poor hydration: Without enough minerals, muscle contraction is impaired and you often get cramps, a pretty common issue among runners.
Lack of muscle endurance: Low muscle strength and endurance also cause early fatigue during exercise.
Not enough rest after strength sessions: Strength training should be part of a runner’s plan, but you need to schedule loads and running sessions well to avoid negative interference between both.
Iron deficiency: This stops the body from delivering oxygen to muscles, organs, and tissues.

What are the symptoms?

Usually, if your legs feel “tired” often, you’ll notice it through these symptoms, whether before, during, or right after your runs:

Muscle stiffness that stops your legs from moving freely.
Swelling around ankles and calves that also causes stiffness.
A heavy feeling and clumsy legs.

Now that you know the possible causes of tired legs when running, here are some tips to help prevent it:

1 Warm up and cool down before every run

Spend at least 10-15% of your total session time warming up and cooling down.

Start with a very gentle walk-jog at low intensity. This lets your musculoskeletal system gradually kick in, raising body temperature and oxygen flow.

Also, don’t stop your session abruptly—slow down gradually and finish with 5 minutes of walking.

2 Pre-activation with Foam Roller

To boost blood flow in your lower limbs, you can use the foam roller as a tool to activate muscles before your run.

Here, the goal is activation and increased blood flow, so roll more superficially and faster than you would for a deep massage.

3 Post-workout myofascial release

To avoid muscle overload and fascia sticking to tissues—which causes stiffness and discomfort over time—it’s highly recommended to do release massages with this tool on the most affected areas during running: tibialis, calves, tensor fasciae latae, quads, glutes, and hamstrings.

This time, use slower, controlled strokes mimicking a deeper muscle massage. It helps keep better muscle tone, improves blood flow, and speeds up recovery.

4 Improve your running technique

Less ground contact time helps the stretch-shortening cycle of muscles work better, making the effort less muscular and more efficient.

This helps prevent early muscle fatigue.

To do this, shorten your stride—take shorter, quicker steps to be more efficient.

You can also mix up the surfaces you run on, including softer terrain like dirt paths instead of just asphalt.

5 Stay hydrated throughout the day

Herbal teas, water, isotonic drinks…

Not drinking enough and lacking minerals messes with your nervous and muscular systems, so staying hydrated and adding minerals via isotonic drinks prevents dehydration and helps flush out toxins and waste.

Evolytes Powder (Mineral Salts) from SportSeries

6 Movement snacks

After sitting or standing for several hours at work, it’s highly recommended to take a walk or move around every now and then. Plus, it helps you refocus to keep working.

Check out our post on movement snacks.

7 Self-massage with anti-inflammatory cream

You can massage your legs after runs, long walks, or whenever you feel stiffness and heaviness.

Always do upward strokes, starting from the ankles going up to help venous return, improve blood flow and oxygenation, reduce fluid retention, and promote toxin elimination.