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Caitríona Jennings Sets Women’s 100-Mile World Record in Tunnel Hill Debut

The former Olympic marathoner delivered the mark in her first race at the distance, underscoring a swift ascent in ultrarunning.

Overview

  • Jennings posted an official 12:37:04 at the Tunnel Hill 100 in Illinois, eclipsing Camille Herron’s 2017 benchmark of 12:42:40 set on the same course.
  • She averaged 7:34 per mile over 160.9km, won the women's race, and placed fourth overall.
  • Race organizers awarded a $7,500 world-record bonus in addition to a $1,250 first prize, according to reports.
  • The performance came in her 100-mile debut; she already holds Ireland’s 50K and 100K records and has strong Comrades Marathon results.
  • Jennings said she executed a patient pacing plan and later thanked organizer Steve Durbin, coach Terry McConnon, mentor Zach Bitter, and her husband and crew Martin McCoy.