08/06/2026
Runners: stop doing just one type of calf raise.
Your calf isn’t one muscle. It’s two, and they do different jobs. The Gastroc drives power and push-off. It’s what you feel when you sprint or attack a hill. It crosses the knee, so you train it with a straight leg.
The Soleus handles endurance. It keeps you upright km after km. It doesn’t cross the knee, so you bias it with a bent knee.
Train both or your Achilles, plantar, and shins will be doing more work than they want to, meaning you're leaving performance on the table and inviting unwanted aches and pains.
I program all 4 types for my online runners depending on race goals and injury history. Bent knee vs straight knee. Fast vs slow. Heavy vs endurance. Context matters.
How to implement: Sample week
- Mon: Seated - heavy + slow 3x8-10 after easy run - Targets soleus. Think strength. Control down, drive up.
- Wed: Bent-knee - springy 2x10-12 after speed work - Still soleus, but now we teach stiffness = Quick ground contact.
- Fri: Standing - single leg 3x12-15 on strength day - Hits gastroc. Full range. Control the lowering. This is your push-off muscle.
- Sun: Seated - Eccentric Tempo - endurance 3x15-20 after long run Soleus again. 2s hold at the top, 3 sec down. Builds tissue capacity so it doesn’t fail at km 30.
If you do all four, you build a calf that can sprint, endure, and stay healthy.
Which one are you skipping? Fix that this week.
Save this and tag a runner with trash calves.