Hannah Cox: 100 Days of Grit

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In late 2025, sustainability strategist and B Leader Hannah Cox set off on an impossible mission known as Project Salt Run. Her goal: to run 100 marathons in 100 days tracing the Inland Customs Line, a forgotten, 2,500-mile living hedge built by the East India Company to enforce a lethal salt tax.

Fresh from crossing the finish line in February 2026, Hannah joins Laura Briggs to share the "dirt bag" reality of the expedition. From battling acute gastroenteritis in the Indian heat to stitching her only pair of shoes back together by the roadside, this is a story of radical transparency, ancestral reckoning, and the sheer grit required to turn a colonial horror story into a £1 million legacy for climate resilience through Project Salt Run.

Donate to Project Salt Run: Help Hannah reach the £1M goal for ClientEarth, Frank Water, Big Change, and 1% for the Planet. ⁠Donate here

⁠Join The Green Runners: Become part of a community running for the planet, not just a PB. ⁠Join here⁠

Hosted by Laura Briggs

Produced & Edited by Paola Handley