Isometric calf hold
Hold halfway up with steady pressure and no bouncing.
- Dose
- 4 × 30–45 seconds
- Progress when comfortable
- Move from two legs to one leg as tolerated.
Runner health pathway
Achilles and Calf Loading for Runners
Tendons usually respond best to patient, progressive loading. Avoid abrupt changes in speed, hills, footwear and calf-training volume.
Written and reviewed by the FormStride coaching team · Updated June 15, 2026 · Educational guidance, not diagnosis or treatment.
Patterns worth reviewing
- A sudden increase in hills, speed or minimalist footwear
- Morning stiffness that is trending upward
- Reduced calf strength or endurance on one side
Exercise progression
Start at a comfortable level. Mild effort is expected; escalating pain is not.
Straight-knee calf raise
Keep the knee straight and lower slowly through a comfortable range.
- Dose
- 3 × 8–12
- Progress when comfortable
- Add backpack or dumbbell load.
Bent-knee calf raise
Keep the heel moving vertically while the knee stays bent.
- Dose
- 3 × 10–15
- Progress when comfortable
- Add resistance before adding speed.
Stop conditions
- • A sudden pop, bruising or inability to push off
- • Rapidly increasing swelling or pain
- • Symptoms worsen from session to session
Seek qualified medical assessment when symptoms are severe, sudden, worsening or persistent.
Connect the exercise to your form
Measure cadence, posture and asymmetry from a short side-on running clip.