Project Salt Run – One woman. 100 marathons. 100 days.

Project Salt Run is a story about what becomes possible when a small group of people choose to act with purpose. Hannah Cox, a first-time ultrarunner and purpose-led entrepreneur, aims to be the first person to run 100 marathons in 100 days along the Inland Customs Line, a forgotten colonial boundary stretching 4,200km across India and Pakistan.

This historic route once enforced a devastating salt tax. Now, it’s being reimagined as a path toward connection and change. Project Salt Run isn’t just a run; it’s a platform to inspire action and show how businesses and individuals can work together to build a more equitable and sustainable future.

The project is in aid of Frank Water, along with other environmental charities 1% for the Planet, Big Change and Client Earth.

“Frank Water is a small but mighty global water charity, with the majority of our sustainable water projects working directly with remote communities in India.  Like Hannah and the Project Salt Run, we aim to tackle global water and environmental issues. From rejuvenating springs in the Himalayas to corporate water stewardship, we combine community knowledge with technical data. We focus on solving complex water problems, working collaboratively with partners to create long-term sustainable change. We’re very excited for Hannah and the Project Salt Run team to get started on this monumental challenge, raising awareness of the importance of an equitable and sustainable future for all, while raising vital funds to make the work happen. We wish Hannah and the team enormous luck with this huge endeavour of 100 marathons in 100 days!” Lizzie Archer, Corporate Partnerships Manager, Frank Water.

Hannah Cox started her 100-day challenge on 25 October 2025. You can follow her journey via LinkedIn and Instagram, and donate via the GiveStar page.
 
Learn more about Project Salt Run and pledge your part of the £1M.