{
  "abstract": "In July 2026, Josh Kerr broke the 26-year-old mile world record, the latest in an unusual concentration of recent middle-distance records that has led to widespread speculation about the role of advancing shoe and other technologies. However, like almost every other recent record-breaking performance, Kerr's race featured a split-staggered start -- an often overlooked, relatively novel start configuration that places a subset of athletes in a front group in the outside lanes, reducing the geometric burden associated with accelerating on tight turns while also avoiding the bulk of the extra distance associated with outside positioning in a traditional distance race. Here, these advantages are quantified using empirical lane-performance data, OMEGA measurements of realized race distance, video reconstruction, and a force-based model of curved running. Applying the resulting corrections to record-breaking performances from 2026, estimated advantages range from approximately 0.1 seconds to more than 1 second, depending on the event, race configuration, and model assumptions. Although small in absolute terms, these advantages demonstrate that start configuration represents a meaningful and previously overlooked source of performance advantage in modern middle-distance racing -- large enough to make the difference between a world record and an otherwise great performance.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.10833",
  "author_total": 1,
  "authors": [
    {
      "name": "Tade Souaiaia"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/18y5fc143frw2.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.10833",
  "fulltext_url": null,
  "id": "18y5fc143frw2",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.10833",
  "language": null,
  "licence": "CC-BY-SA-4.0",
  "licence_label": "CC BY-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.soc-ph"
    ],
    [
      "arxiv",
      "stat.AP"
    ],
    [
      "openalex",
      "2732|Sports Performance and Training"
    ]
  ],
  "openalex": "W7212317282",
  "pdf_url": "https://arxiv.org/pdf/2609.10833",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/18y5fc143frw2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:26Z",
      "native_id": "2609.10833",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.10833"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:stat.AP",
      "subfield": "statistics"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.soc-ph",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Estimating the Time Advantage of Split-Staggered Starts in Record-Breaking Middle-Distance Races",
  "title_text": "Estimating the Time Advantage of Split-Staggered Starts in Record-Breaking Middle-Distance Races",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:36Z",
  "url": "https://research.draconitic.com/paper/18y5fc143frw2",
  "venue": "arXiv",
  "versions": []
}