Her autobiographical first book, The Salt Path, at once a memoir, a piece of nature writing and a travel book, was shortlisted for the 2018 Wainwright Prize,[2] and the 2018 Costa Book Awards[2] in the biography category. The judges described it as "An absolutely brilliant story that needs to be told about the human capacity to endure and keep putting one foot in front of another."[7] In May 2019 the book won the inaugural RSL Christopher Bland Prize.[8] In September 2019 it was the bestseller in UK independent bookstores.[9] In 2023 a film adaptation of the same name began filming with Gillian Anderson and Jason Isaacs in the lead roles.[10]
Winn also writes about nature, homelessness and wild camping.[11] Her second book, The Wild Silence, was published by Michael Joseph (a subsidiary of Penguin Books) in September 2020.[9][12] It was shortlisted for the 2021 Wainwright Prize for Nature Writing.[13]
Winn's third book, Landlines (2022), describes a 1,000-mile (1,600 km) journey with her husband along the 200-mile (320 km) Cape Wrath Trail in north-west Scotland, described as "the toughest and wildest Britain has to offer", and southwards through Scotland and England to the South West Coast Path.[14][15]
In April 2024 the couple set out to walk the Thames Path to raise awareness and funds for CBD.[16] Winn then took part in the 2024 London Marathon, completing in a time of 7hr 52min 7sec.[17]