BackSPORTS
Running 100 marathons in 100 days - fuelled by an Indian hedge obsession
Hannah Cox embarked on Project Salt Run, running 100 marathons in 100 days across India, beginning at the Attari-Wagah border on October 26, 2025. The trek included days of intense heat, sickness, and logistical hurdles, and even a Day 24 encounter with Richard Branson at the Taj Mahal. She later ran in the UK in April 2026, including the Brighton Marathon and the London Marathon as part of the same challenge.
Why It Matters
The feat combines endurance sport, personal history and environmental fundraising, highlighting the physical and logistical challenges of ultra-running across diverse environments.
Timeline
4 Events
London Marathon appearance following Brighton
April 2026
Last weekend before the article's publication, Cox took on the London Marathon as part of her broader challenge, timed in April 2026.
Brighton Marathon during preparation window
April 2026
In early April 2026, Cox ran the Brighton Marathon as part of preparation for the UK leg of her journey.
Day 24 encounter with Richard Branson at Taj Mahal
November 18, 2025
On day 24 of the challenge, Cox encounters Richard Branson at the Taj Mahal. She experiences illness that day but receives support from Branson's charity event participants who ran with her, while continuing the marathon.
Launch of Salt Run from Attari-Wagah border to Kolkata
October 26, 2025
Hannah Cox begins the 100-marathons-in-100-days journey, starting at the Attari-Wagah border between India and Pakistan, bound for Kolkata as part of her project to raise funds for environmental charities.