Weighted Donkey Calf Raise
- Target muscle
- Gastrocnemius
- Synergist muscles
- Soleus
- Equipment
- Weighted
- Body part
- Calves
- Type
- Strength
The weighted donkey calf raise is a strength exercise that targets the gastrocnemius with soleus assistance. By hinging forward at the hips roughly 90°, the gastrocnemius is stretched across both the knee and ankle, increasing its range of motion beyond what a standing calf raise allows. Adding load via a weight belt, plate, or machine amplifies the training stimulus and makes it well-suited for building calf mass and ankle-push-off strength.
How to do the Weighted Donkey Calf Raise
- 1Position a sturdy raised platform (a calf block or step) in front of a bench or fixed surface you can brace against.
- 2Hinge forward at the hips until your torso is roughly parallel to the floor and grip the bench or pad firmly to support your upper body.
- 3Secure the additional load — wear a dip belt with plates, have a partner sit on your hips, or use the pad of a dedicated donkey-calf machine.
- 4Step onto the platform so only the balls of your feet are on the edge, letting your heels hang freely below the platform level.
- 5Lower your heels as far as comfortable toward the floor, feeling a full stretch through the calves.
- 6Press through the balls of your feet to raise your heels as high as possible, squeezing the gastrocnemius hard at the top.
- 7Pause briefly at peak contraction, then lower your heels under control back to the starting stretched position.
- 8Complete all reps, then carefully step off the platform before releasing the load.
Form tips
- Keep the hip hinge angle close to 90° throughout the set — letting your hips rise reduces the stretch on the gastrocnemius and defeats the exercise's main advantage.
- Prioritize depth at the bottom: a full stretch through the gastrocnemius drives more growth than rushing through a shallow range of motion.
- Use a slow, controlled eccentric (2–3 seconds on the way down) to maximise time under tension and reduce Achilles tendon stress.
- Keep your knees soft but not bent — a slight knee flex is fine; deeply bending them shifts work to the soleus and away from the gastrocnemius.
Common mistakes
- Using too much weight and shortening the range of motion — partial reps reduce the stretch stimulus that makes this exercise superior to standing calf raises.
- Letting the hips rise out of the hinge position, which unloads the gastrocnemius and can strain the lower back.
- Bouncing at the bottom of the rep, which offloads the muscle and puts sudden stress on the Achilles tendon.
- Allowing the ankles to roll outward during the press, which shifts load unevenly and increases injury risk — keep the ankles neutral and press evenly through the ball of each foot.
Frequently asked questions
Why is the donkey calf raise better than a standing calf raise?
Hinging forward at the hips puts the gastrocnemius in a longer position by stretching it across both the knee and ankle joints simultaneously. This greater range of motion creates a stronger growth stimulus for the gastrocnemius compared to the standing position.
How do I add weight to a donkey calf raise without a machine?
The most common options are a dip belt loaded with weight plates, or having a training partner sit across your hips. Some gyms also have dedicated donkey calf raise machines that replicate the bent-over position with a built-in load pad.
How many reps should I do for the weighted donkey calf raise?
Calves respond well to a range of rep targets. Sets of 8–12 reps work well for strength and hypertrophy with heavier loads, while sets of 15–20 reps with moderate weight can also drive significant muscle growth given the calf's endurance-oriented fiber composition.
What is the difference between the gastrocnemius and soleus in calf raises?
The gastrocnemius is the larger, two-headed calf muscle visible at the back of the lower leg and crosses both the knee and ankle joints. The soleus lies beneath it and crosses only the ankle. Bent-knee calf work (like seated raises) emphasises the soleus, while straight- or nearly straight-knee positions like the donkey calf raise preferentially load the gastrocnemius.
Is the weighted donkey calf raise safe for the lower back?
Yes, provided the load is appropriate and you maintain a stable hip-hinge position throughout the set. Using a machine with a hip pad distributes the load safely; if loading manually (belt or partner), brace your core and avoid letting your hips shift or rise during the movement.
