Caitriona Jennings Breaks Women’s 100-Mile World Record at Tunnel Hill in Stunning Performance
Caitriona Jennings, an ultra-distance runner from Ireland, has achieved a remarkable milestone in her debut at the 100-mile distance. At the 2025 Tunnel Hill 100 Mile event, she set a new world record by finishing in an impressive time of 12:37:04.
Caitriona Jennings Shatters Women’s 100-Mile World Record
This astonishing performance surpassed the previous record of 12:42:40, held by Camille Herron, which was set in 2017 at the same event. Jennings demonstrated exceptional pacing, averaging 7:34 per mile (4:42/km) over the full distance of 160.9 kilometers.
Race Conditions and Performance
The race commenced at 7 a.m. CST on November 8, 2025, with cool initial conditions. However, as the day progressed, the temperatures rose, yet Jennings maintained her focus and rhythm remarkably. Her endurance and mental toughness were evident throughout the race.
Previous Accomplishments in Ultra-Distance Running
Though this was her first official 100-mile race, Jennings has a proven track record in ultra-distance events. Earlier in 2025, she set the Irish 50k record at the Donadea 50k National Championships, finishing in 3:16:33. Additionally, she holds the Irish 100k record of 7:43:01, achieved in 2021.
Key Highlights of Jennings’ Career
- Victory at the 2022 IAU 50k European Championships.
- Multiple top-10 finishes at the prestigious Comrades Marathon.
- Remarkable pacing, maintaining splits around 7:26 per mile for nearly 80 miles.
Caitriona Jennings’ ability to consistently outperform world-record pace reflects her extensive preparation, commitment to training, and elite-level endurance capabilities. Her triumph at the Tunnel Hill event not only sets a new benchmark in women’s ultra-running but also highlights her rising status in the sport.
