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SESK: Stuff Everyone Should Know · sesk.info/run-achilles-tendinitis-cause

What commonly triggers Achilles tendinitis in runners?

A sudden jump in distance or intensity can trigger it.

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  1. Wearing extra socks
  2. Drinking too much water
  3. A sudden jump in running distance or intensity ✔

Why: The Achilles tendon gets irritated when you do too much, too quickly. Adding a few miles a day without giving your body time to adjust can inflame it.

Huh, didn't know that: Tight calf muscles and a change in shoes can also strain the Achilles tendon.

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Why did the runner name their dog Achilles? He was always at their heel.
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References

Answer: A sudden jump in running distance or intensity. The Achilles tendon gets irritated when you do too much, too quickly. Adding a few miles a day without giving your body time to adjust can inflame it.

  1. Achilles Tendinitis | OrthoInfo orthoinfo.aaos.org/en/diseases--conditions/achilles-tendinitis
    A sudden increase in the amount or intensity of exercise activity.
    Checked 2026-10-12.

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