Written by Patrick Dale, PT, ex-Marine

When it comes to calf training, most people focus their attention on the gastrocnemius, which is the most prominent muscle in your lower legs. However, there is another muscle that makes up your calf, and it’s called the soleus.

While not as well-known as the gastroc, the soleus muscle is actually larger and potentially stronger than its more famous partner. And while the two calf muscles mostly work together, it is possible to emphasize the soleus.

In this article, we reveal the eight best exercises to strengthen and stretch the often-overlooked soleus muscle.

The calves are easy to ignore. After all, they’re way down at the bottom of your leg, so they’re often out of sight and out of mind. However, when well-developed, the calves can add a lot to your physique, especially if you wear shorts!

There are several muscles that make up the calf complex, which is often called the triceps surae, referring to the three different muscle heads that make up this body part.

The gastrocnemius is the dual-headed outermost calf muscle that makes up most of your lower leg girth. The gastroc is a biaxial muscle, meaning it crosses two joints – the ankle and the knee. As such, it has two primary functions.

The main role of the gastrocnemius is plantar flexion of the ankle. This means pointing your toe, as happens during calf raises.

The second function of the gastrocnemius is knee flexion. It works with the hamstrings to help bend your knees. Watch your calves during leg curls to see them contract to aid your hamstrings. However, this is quite a weak action compared to plantar flexion.

The second main calf muscle, the soleus, lies beneath the gastrocnemius, and only the lower section is really visible. Unlike the gastroc, the soleus is a uniaxial muscle that only crosses one joint; the ankle.

As such, the soleus only has one main function – plantarflexion.

While soleus and gastrocnemius work together, it is possible to emphasize the soleus by working with bent knees. When your knees are bent, the gastrocnemius is put into a semi-relaxed position and cannot contribute as much to plantar flexion.

So, if you want to train both calf muscles, exercises like straight leg calf raises and donkey calf raises are the way to go. But, if you want to deemphasize the gastroc and hit the soleus a little more, bent-knee exercises are more effective.

Whether you want to build more muscular calves, run faster, jump higher, or improve ankle mobility for deeper squats, these are the best strengthening and stretching exercises to do it!

Seated calf raises are done with bent knees, putting slack into your gastrocnemius and leaving your soleus to do more of the work. Most gyms have a seated calf raise machine, either plate loaded or with a selectorized weight stack. Make this exercise the cornerstone of your calf workouts if you want to develop bigger, stronger soleus muscles.

Studies suggest that the soleus comprises primarily slow-twitch muscle fibers and responds best to light weights and high reps (1). So, do low reps and heavy weights for your gastrocnemius and use the opposite approach for training your soleus to maximize hypertrophy.

No seated calf machine at your gym? No problem! You can also work your soleus with a barbell or dumbbells. That’s good news for anyone who trains in a poorly equipped gym or prefers to work out at home.

Ultimately, your body cannot tell if you are doing seated calf raises on a selectorized machine or are sitting on an old dining room chair with a bag of books resting on your knees. That’s good news because it means you can train your calves using any form of overload – even just your body weight.

This simple exercise is a great way to train your soleus at home. As an added benefit, it’ll also fire up your glutes and hamstrings.

Are you short on time? Do you want to train your quads AND your calves simultaneously? Then you need to try the soleus squat! As well as being a total leg exercise, this move will also improve your balance and mobility and build ankle stability.

A tight soleus will limit the range of motion of your ankle joint. This can increase your risk of calf injuries during high-impact activities like running, sprinting, and jumping. Also, tight calves can reduce squat depth as they will prevent you from moving your knees forward over your toes. If you want to squat “ass to grass,” you NEED flexible calves and mobile ankles!

As such, you should not just do exercises to strengthen your soleus but to stretch it, too. The standing soleus stretch is both simple and effective.

The soleus muscle can be very resistant to stretching. It’s a strong muscle that often needs to be quite forcefully extended. This exercise uses your entire body weight to stretch your soleus, making it ideal for stubborn calves. However, you should only do this exercise once you are well warmed up and avoid bouncing, which could damage the soleus or Achilles tendon.

If you’re coming back from a calf injury, the last thing you need to do is stretch too aggressively. This exercise doesn’t use bodyweight to stretch your soleus, making it far gentler and ideal for anyone rehabbing a calf injury or who prefers a less intense stretch. You could also use it as a warm-up before doing more intense soleus stretching exercises.

Your muscles are surrounded by a thin layer of fibrous tissue called fascia. Fascia separates and connects each muscle from its neighbor. This fascia can become “gummed up,” leading to tight, painful muscles. This can cause trigger points, poor blood flow, and reduced function.

Foam rolling is a form of self-massage called self-myofascial release that can help free up your fascia and restore normal movement and function. Foam rolling your calves will enhance your flexibility and performance.

Note: Foam rolling can be painful. But, as the adhesions start to dissolve, subsequent foam rolling sessions should be less uncomfortable. Increase the pressure gradually to avoid unnecessary pain.

While your soleus is largely hidden behind your gastrocnemius, it’s no less important for calf size and strength. You train your soleus every time you work your gastrocnemius, but that doesn’t mean it won’t benefit from some individual attention from time to time.

Use these strengthening and stretching exercises to keep your soleus in tip-top condition. Whether you want bigger, stronger calves or want to run faster, or jump higher, your soleus deserves your attention!

1- Springer.com: Human soleus muscle: A comparison of fiber composition and enzyme activities with other leg muscles https://link.springer.com/article/10.1007/BF00587415

Patrick Dale is an ex-British Royal Marine, gym owner, and fitness qualifications tutor and assessor. In addition, Patrick is a freelance writer who has authored three fitness and exercise books, dozens of e-books, thousands of articles, and several fitness videos. He’s not just an armchair fitness expert; Patrick practices what he preaches! He has competed at a high level in numerous sports, including rugby, triathlon, rock climbing, trampolining, powerlifting, and, most recently, stand up paddleboarding. When not lecturing, training, researching, or writing, Patrick is busy enjoying the sunny climate of Cyprus, where he has lived for the last 20-years.

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