* en - The "e" in "en" is a schwa sound, which is a short vowel sound.
* dur - The "u" in "dur" has a short vowel sound.
* ance - The "a" in "ance" has a short vowel sound.
Therefore, the word "endurance" has three short vowel sounds.
* en - The "e" in "en" is a schwa sound, which is a short vowel sound.
* dur - The "u" in "dur" has a short vowel sound.
* ance - The "a" in "ance" has a short vowel sound.
Therefore, the word "endurance" has three short vowel sounds.