"5-K" meaning in English

{
  "forms": [
    {
      "form": "5-Ks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "5-K (plural 5-Ks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "5K"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sports",
          "orig": "en:Sports",
          "parents": [
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2008 October, “17 problems you can fix right now”, in Men's Health, volume 23, number 8, →ISSN, page 162",
          "text": "Bill Hartman, P.T., C.S.C.S., suggests breaking your run into intervals at your goal speed. If your 5-K goal is 24 minutes, you must run a mile in 7:40, a half-mile in 3:50, and a quarter in 1:55.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of 5K."
      ],
      "id": "en-5-K-en-noun-hNvzMCV~",
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "5K",
          "5K#English"
        ]
      ],
      "raw_glosses": [
        "(sports) Alternative form of 5K."
      ],
      "tags": [
        "alt-of",
        "alternative"
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "word": "5-K"
}

{
  "forms": [
    {
      "form": "5-Ks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "5-K (plural 5-Ks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "5K"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms spelled with numbers",
        "English terms with quotations",
        "English words without vowels",
        "en:Sports"
      ],
      "examples": [
        {
          "ref": "2008 October, “17 problems you can fix right now”, in Men's Health, volume 23, number 8, →ISSN, page 162",
          "text": "Bill Hartman, P.T., C.S.C.S., suggests breaking your run into intervals at your goal speed. If your 5-K goal is 24 minutes, you must run a mile in 7:40, a half-mile in 3:50, and a quarter in 1:55.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of 5K."
      ],
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "5K",
          "5K#English"
        ]
      ],
      "raw_glosses": [
        "(sports) Alternative form of 5K."
      ],
      "tags": [
        "alt-of",
        "alternative"
      ],
      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "word": "5-K"
}