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Caitriona Jennings running at the 2012 Olympics.
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Ireland's Caitriona Jennings smashes women's 100-mile world record
The Donegal woman beat the previous record by over five minutes.
IRELAND’S CAITRIONA JENNINGS has set a new women’s 100-mile world record in Illinois.
The Donegal woman clocked a superb 12:37:04 at the 2025 Tunnel Hill 100 Mile in what was her first attempt over the distance.
Jennings, who competed in the marathon at the 2012 Olympics, beat the previous record of 12:42:40 which was set by USA’s Camille Herron at the same event in 2017. Jennings also averaged 7:34 per mile across the 160.9km of this race and finished fourth overall.
Already an established athlete in ultra running, Jennings holds the Irish record for 50km and 100km and has now distinguished herself at world level.
🏆 𝐖𝐎𝐑𝐋𝐃 𝐑𝐄𝐂𝐎𝐑𝐃 𝐀𝐋𝐄𝐑𝐓 🏃♀️💥
— Athletics Ireland (@irishathletics) November 9, 2025
Ireland’s Caitriona Jennings has just rewritten history at the 2025 Tunnel Hill 100 Mile - smashing the women’s 100-mile world record with a time of 12:37:04 in her first-ever attempt at the distance! 🇮🇪🔥
She beat the previous record… pic.twitter.com/cxOVYX3vAm
Written by Sinead Farrell and originally published on The 42 whose award-winning team produces original content that you won’t find anywhere else: on GAA, League of Ireland, women’s sport and boxing, as well as our game-changing rugby coverage, all with an Irish eye. Subscribe here.
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