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How far apart are the bases on an MLB field?

90 feet. The infield is a 90 foot square.

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  1. 60 feet
  2. 100 feet
  3. 90 feet ✔

Why: The infield must be a square with 90 foot sides, so it is 90 feet from home to first, first to second, second to third and third to home.

Huh, didn't know that: Home plate to second base is 127 feet, 3 and 3/8 inches.

The dad joke
Why did the runner love geometry? Every lap was a perfect square.
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References

Answer: 90 feet. The infield must be a square with 90 foot sides, so it is 90 feet from home to first, first to second, second to third and third to home.

  1. MLB Glossary: Field Dimensions www.mlb.com/glossary/rules/field-dimensions
    The infield must be a square that is 90 feet on each side
    Checked 2026-10-12.

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