{
  "title": "Mile Run Protocol",
  "author": "Allen Lorch",
  "published": "2026-07-19T04:00Z",
  "event_definition": {
    "distance_meters": 1609.344,
    "distance_label": "1 statute mile",
    "classification": "middle-distance running event",
    "sport": "Athletics (Track & Field)",
    "current_record_holder": "Josh Kerr",
    "current_record_time_seconds": 223.17,
    "current_record_date": "2026-07-18",
    "velocity_spike_factor": 37.89
  },
  "physiological_parameters": {
    "average_pace_sec_per_km": 55.4,
    "vo2_max_min_ml_per_kg_min": 85,
    "lactate_threshold_percent_vo2_max": 85,
    "running_economy_ml_o2_per_kg_per_km": 195,
    "critical_speed_km_per_hour": 20.1
  },
  "track_geometry": {
    "standard_lane_length_meters": 400,
    "mile_lap_count": "4 laps + 9.344 meters",
    "surface_coefficient_friction": 0.7,
    "turn_radius_meters": 36.5
  },
  "performance_history": [
    {
      "year": 1999,
      "runner": "Hicham El Guerrouj",
      "time_seconds": 223.13,
      "location": "Rome, Italy",
      "gender": "male"
    },
    {
      "year": 2026,
      "runner": "Josh Kerr",
      "time_seconds": 223.17,
      "location": "Birmingham, UK",
      "gender": "male"
    },
    {
      "year": 1999,
      "runner": "Nawal Kherbib",
      "time_seconds": 252.56,
      "location": "Paris, France",
      "gender": "female"
    }
  ],
  "wikidata_source": "Q943635",
  "related_concepts": [
    "golden-seam-allen-lorch",
    "14-week-ledger"
  ]
}