Are Calf Raises Good for Runners? Here's the Evidence

Are calf raises good for runners?

Yes. The calf-Achilles complex absorbs an estimated 6-8 times your body weight with every running stride, and most recreational runners never train it directly. Strengthening it can improve push-off and is a standard first-line exercise used in Achilles tendinopathy rehab. That said, calf raises address a capacity gap in the lower leg, not a specific diagnosed gait fault, and they work best as one piece of a broader strength routine rather than a stand-alone fix.

What's the difference between a straight-knee and bent-knee calf raise?

A straight-knee (standing) calf raise loads the gastrocnemius, the larger, more visible calf muscle that crosses both the knee and ankle joints. A bent-knee calf raise, done seated or with the knee flexed to roughly 90 degrees, slackens the gastrocnemius at the knee and shifts the work to the soleus, the deeper muscle that crosses only the ankle. Runners generally benefit from training both. A reasonable starting point is 2-3 sets of straight-knee raises and 2-3 sets of bent-knee raises, 2-3 times per week, progressing from double-leg body weight to single-leg to added weight as strength allows.

Why does soleus vs gastrocnemius matter for runners specifically?

Because the two muscles do different jobs while you run. The gastrocnemius contributes more during sprinting, hill climbing, and forceful push-off. The soleus does continuous, lower-intensity work to control ankle dorsiflexion and support body weight through the stance phase of steady-pace running, meaning it's under sustained load for far more of a typical easy run than the gastrocnemius is. If your strength routine only includes straight-knee raises, you may be underloading the muscle doing the most repetitive work on your longer runs. This is one reason calf training is often paired with strengthening the feet and arches: the foot, ankle, and lower leg function as one load-sharing unit, and a weakness in one part tends to shift stress onto the others.

How much load does the Achilles tendon handle when you run?

The Achilles tendon transfers the force your calf muscles generate to the heel bone, and during running it's estimated to handle roughly 6-8 times body weight per stride, with higher loads on hills or at faster paces. That repetitive, high-magnitude loading is a major reason Achilles tendinopathy is so common in runners — estimates suggest it affects up to around 18% of runners at some point in their running life. Tendons adapt to load slowly, over months rather than weeks, so a tendon that hasn't been progressively loaded has less reserve capacity when training volume or intensity increases suddenly. The practical takeaway is to build calf and tendon strength ahead of a mileage jump, not in response to one.

What is the eccentric heel-drop protocol, and how do you do it?

Eccentric heel drops are a specific loading protocol, popularized by what's often called the Alfredson protocol, originally developed and studied for Achilles tendinopathy rehabilitation. It's also used preventively by some runners and physiotherapists as part of general calf conditioning. The exercise emphasizes the lowering (eccentric) phase of the movement: rise onto the balls of both feet, shift your weight onto one leg, then lower slowly over 3-4 seconds until your heel drops below the step edge, using both legs to reset to the top. It's typically performed with both a straight knee and a bent knee in the same session to load the gastrocnemius and soleus separately.

Phase Weeks Sets x reps Knee position Frequency
Introductory 1-2 3x15 Straight and bent knee Once daily, light or no added load
Building 3-6 3x15 Straight and bent knee Twice daily, add light weight if pain-free
Progressive loading 7-12 3x15 Straight and bent knee Twice daily, add weighted vest or backpack as tolerated

This timeline reflects the general structure used in tendinopathy rehab research, not a rigid prescription. If you already have Achilles pain, work through it with a physiotherapist rather than self-applying a rehab protocol, since load progression needs to be matched to how your tendon is actually responding.

How do calf raises fit into a broader injury-prevention routine?

Calf raises address one link in a chain that also includes hip and glute strength, single-leg balance, and posture under fatigue. For an injury-prone recreational runner, a well-rounded routine done twice a week tends to be more protective than isolated calf work alone. Pair calf raises with balance exercises to improve single-leg stability at footstrike, and with posture-focused strength work to address compensations further up the chain that can otherwise funnel extra load onto the calf and Achilles. While you build this strength base, keep easy runs genuinely easy — checking your heart rate zones for easy-effort running helps confirm you're not stacking new training intensity on top of new strength work before your tissues have had time to adapt. A phone-video form check, such as StrideIQ, can help you track cadence changes as your calf strength improves, though it isn't a substitute for measuring tendon load or ankle range of motion directly.

What can calf raises and form analysis NOT tell you?

Calf raises build capacity, but they can't diagnose why you have calf or Achilles pain, and doing them isn't a substitute for an individualized assessment if you're already symptomatic. The evidence linking specific footstrike patterns or cadence to calf and Achilles injury risk is genuinely mixed, so treat form cues as tendencies worth exploring rather than a confirmed cause to correct. Phone-video form analysis, including tools like StrideIQ, can reliably estimate cadence from a side-view video, but it can't measure Achilles tendon load, true ankle dorsiflexion range, or ground-contact time with lab-grade precision — those require force plates or high-speed, multi-camera capture. If you have persistent calf tightness, Achilles pain that doesn't ease within a few days, or pain that changes how you walk or run, see a physiotherapist or sports medicine doctor for an in-person assessment rather than self-prescribing a loading plan.

Frequently Asked Questions

Are calf raises good for runners with Achilles pain?

Eccentric calf raises are a common first-line component of Achilles tendinopathy rehab, but if you currently have Achilles pain, work with a physiotherapist to set the right load and progression rather than starting a protocol on your own.

Should runners do straight-leg or bent-knee calf raises?

Both. Straight-knee raises target the gastrocnemius, bent-knee raises target the soleus, and runners rely on both muscles differently depending on pace and terrain, so a routine with 2-3 sets of each is a reasonable starting point.

How often should runners do calf raises?

Two to three sessions per week is typical for general strengthening, allowing at least one rest day between sessions since the calf and Achilles are already loaded heavily during running itself.

Can calf raises prevent shin splints?

Calf and soleus strength may help share load that would otherwise concentrate on the shin, but shin splints have multiple contributing factors including training volume and footwear, so calf raises are a supporting measure, not a guaranteed fix.

Do calf raises help running speed?

Stronger calves can improve push-off force, which may support running economy, but speed also depends on cadence, overall strength, and aerobic fitness, so calf raises are one contributing factor among several.

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