{
  "@context": "https://schema.org",
  "@type": "TechArticle",
  "@id": "https://anchorfact.org/kb/kb-2026-00452",
  "headline": "Marathon Running",
  "description": "The marathon (42.195 km / 26.2 miles) is the ultimate test of endurance. Origin: Pheidippides ran from Marathon to Athens to announce Greek victory (490 BCE) — then died. Modern marathon: first Olympic event (1896). World record: Kelvin Kiptum (2:00:35, Chicago 2023). Sub-2 hour barrier: Eliud Kipchoge (1:59:40, Vienna 2019, unofficial).",
  "dateCreated": "2026-05-22T14:59:47.860Z",
  "dateModified": "2026-05-22T14:59:47.860Z",
  "author": {
    "@type": "Organization",
    "name": "AnchorFact"
  },
  "publisher": {
    "@type": "Organization",
    "name": "AnchorFact",
    "url": "https://anchorfact.org"
  },
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "anchorfact:confidence": "high",
  "anchorfact:generationMethod": "ai_assisted",
  "citation": []
}