Why Does My Shin Feel Sore During Long Runs?

If your shin starts aching partway through a long run, the soreness may build with each mile until your lower legs feel tired, tender, or uncomfortable with every step.

You may start a run feeling fine, only to notice soreness along the front or inner edge of your shin after several miles. The muscles along the front of your lower leg help lift your foot, while other lower leg muscles help control how your foot meets the ground. When these muscles have to keep working over a long distance, they can become fatigued and sore.

As the run continues, tired muscles may become less effective at handling each step comfortably. Your stride may begin to feel heavier, and the same pace that felt easy early in the run may become harder on your lower legs. Shin splints are one possible cause, although sharp, localized pain along the shinbone can also indicate a bone stress injury.

The Ache Starts After You've Been Running For A While

Your lower leg muscles have to repeat the same work thousands of times during a long run.

With every stride, your shin muscles help control your foot as it lifts, lands, and moves through the next step. Even if each step feels comfortable at first, the repeated work can gradually irritate the muscles and their attachments near the shinbone. This is why your shin may begin aching several miles into a run rather than during the first few minutes.

Each Extra Mile Makes Your Shins Work Harder

As your legs tire, maintaining your usual stride takes more effort.

Later in a long run, fatigue can make your foot control less efficient, so your lower legs may have to work harder to keep your stride comfortable. Hills, a faster pace, or a sudden increase in distance can add to that demand and make the soreness build sooner. Continuing to push through increasing pain can worsen the problem instead of allowing you to finish comfortably.

Why Your Shin Soreness Keeps Returning During Long Runs

Your shin has a hard time healing when blood flow and circulation are limited.

Tendons, ligaments, and other soft tissues naturally receive less blood supply than many other parts of the body. Because of this, they often take longer to heal after repeated stress or injury, leaving you more vulnerable to lingering pain and a cycle of reinjury.

When circulation through the area remains limited, injured tissues have a harder time receiving the vital oxygen and nutrients they need to repair and heal. This can leave your shin feeling stiff, tight, weak, or painful during everyday movement and activity.

What Can Help Your Shin Feel Better

Your shin starts feeling better when blood flow and circulation improve.

Chinese herbs have been used for centuries to promote healthy blood flow and circulation. Their medicinal properties help break up stagnant blood and fluids that remain trapped around injured tissues, interfering with circulation. As circulation improves, blood flows more freely through the area, allowing those tissues to receive the oxygen and nutrients they need to heal properly.

Topical herbal remedies made with these Chinese herbs can help relieve pain while improving blood flow and circulation to injured tissues. The right product depends on your symptoms and whether you're in the acute or chronic stage of recovery.

If you have pain, swelling, inflammation, or bruising, Acute Sinew Liniment helps relieve these symptoms by increasing circulation and dispersing stagnant blood and fluids around the injured area to speed recovery. During the acute stage of healing, getting circulation moving early allows injured tissues to receive the fresh blood, oxygen, and nutrients they need to repair and heal.

If your injured area is especially swollen, red, or warm to the touch after a recent injury or flare-up, Sinew Herbal Ice is also used to reduce swelling and inflammation while restoring normal circulation so you can quickly regain range of motion. While traditional ice is commonly used to reduce swelling, Sinew Herbal Ice acts as an ice alternative to reduce swelling and inflammation while also dispersing accumulated blood and fluids to speed the healing process.

If you no longer have swelling or inflammation, but still have pain, stiffness, weakness, or sensitivity in cold and damp weather, Chronic Sinew Liniment helps relieve these symptoms by strongly stimulating circulation and increasing blood supply to injured tendons and ligaments to promote their healing. This is especially important because tendons and ligaments naturally receive less blood supply, which is why chronic injuries can take longer to heal.

If you have residual pain and stiffness, or the area becomes more painful in cold weather, Sinew Injury Poultice is also used to significantly stimulate circulation to injured tendons and ligaments to further promote their healing. By strongly increasing circulation, it counteracts the reduced blood flow caused by cold weather that commonly aggravates chronic tendon and ligament injuries.

If you exercise, play sports, or do other strenuous activities, Sinew Sports Massage Oil warms and stimulates muscles for exertion and relieves muscle tightness and soreness after activity. Warming and preparing your muscles before activity can improve flexibility, enhance performance, and reduce the risk of injury.

Frequently Asked Questions

You may also find these commonly asked questions helpful.

Why does my shin feel sore during long runs?

Your shin may become sore as your lower leg muscles fatigue from repeated strides and impact, especially when your distance, pace, or hills exceed what your legs are used to.

Why does shin soreness start several miles into a run?

Your lower leg muscles may gradually tire as the run continues, making the repeated work of controlling your foot more demanding and uncomfortable.

Could shin splints cause pain during long runs?

Yes. Shin splints can cause aching or tenderness along the front or inner edge of your shin, particularly when running distance or intensity increases.

Should I keep running when my shin starts hurting?

Stop or reduce your run if the pain is increasing. Sharp or localized bone pain, pain when walking, or symptoms that persist or worsen should be assessed by a healthcare professional.

How can I prevent shin soreness during long runs?

Build your distance gradually, avoid sudden increases in pace or hills, and allow time between demanding runs. Comfortable shoes and adequate recovery may also help reduce excessive stress on your lower legs.

The information provided here is intended to help you better understand your symptoms and recovery, but it is not a substitute for professional medical advice, diagnosis, or treatment.

Persistent, severe, or worsening symptoms should be evaluated by a qualified healthcare professional.