"standing mile" meaning in English

{
  "forms": [
    {
      "form": "standing miles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "standing mile (plural standing miles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1892 September 9, “Tyler does it.”, in Trade Supplement to the Bearings: the Cycling Authority of America, volume 6, number 6, page 3:",
          "text": "AFTER THE SECOND DAY'S RACING AT SPRINGFIELD TYLER DOES A STANDING MILE IN 2:08 4-5, BREAKING TAYLOR'S RECORD—(...)",
          "type": "quote"
        }
      ],
      "glosses": [
        "In racing, a competition or timed race over a distance of one mile from a standing start (i.e. a stationary starting position)."
      ],
      "id": "en-standing_mile-en-noun-PQ7AGsrG",
      "links": [
        [
          "mile",
          "mile"
        ]
      ]
    }
  ],
  "word": "standing mile"
}

{
  "forms": [
    {
      "form": "standing miles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "standing mile (plural standing miles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1892 September 9, “Tyler does it.”, in Trade Supplement to the Bearings: the Cycling Authority of America, volume 6, number 6, page 3:",
          "text": "AFTER THE SECOND DAY'S RACING AT SPRINGFIELD TYLER DOES A STANDING MILE IN 2:08 4-5, BREAKING TAYLOR'S RECORD—(...)",
          "type": "quote"
        }
      ],
      "glosses": [
        "In racing, a competition or timed race over a distance of one mile from a standing start (i.e. a stationary starting position)."
      ],
      "links": [
        [
          "mile",
          "mile"
        ]
      ]
    }
  ],
  "word": "standing mile"
}