Jo Gardiner died on August 24, 2026, following what her family described as a long and courageous battle with cancer. The 61-year-old physiotherapist from Manchester had captured hearts in 2020 when she competed alongside her son Sam on the BBC's Race Across the World, journeying from Mexico City to Ushuaia, Argentina, the world's most southerly city. The pair finished fourth in the competition, but their bond and determination made them unforgettable to millions of viewers. Tragedy struck the family in May 2025 when Sam Gardiner, then 24, died in a horrific single-vehicle crash on the A34 near Manchester. The landscape gardener had been driving his white Volkswagen Golf R in what authorities later described as appalling weather conditions when he lost control. The car rolled and landed on its side. Sam suffered devastating brain injuries and died three days later at Salford Royal Hospital. An inquest revealed that tire conditions and the manner of driving in poor weather were significant factors in the collision. He had been home from his work on Scotland's west coast for a family gathering when the accident occurred. Jo and Sam had entered Race Across the World because Jo wanted to share an adventure with her son, who had ADHD (Attention Deficit Hyperactivity Disorder) and FASD (Fetal Alcohol Spectrum Disorder). The show strips contestants of modern technology, flights, credit cards, and smartphones, giving them only the cash equivalent of a one-way plane ticket to race across continents. Over 54 days, the mother and son traveled 25,000 kilometers through Honduras, Panama, Colombia, Peru, Brazil, and Argentina. They ran out of money before reaching the finish line and had to withdraw during the seventh leg of the race. Even their exit was handled with grace and humor, qualities that defined Jo's approach to life. Studio Lambert and the BBC issued a statement calling Jo the matriarch of the Race Across the World cast family. Her fellow contestants remembered her warmth and the special relationship she shared with Sam. Winner Emon Choudhury described Sam as sunshine in human form, a testament to the parenting Jo provided despite managing type 1 diabetes and the challenges that came with raising a son with developmental conditions. Jo lived with type 1 diabetes for years and served as an ambassador for Diabetes UK, using her platform to raise awareness about the condition. Her family has established a JustGiving page in her memory, directing donations to Diabetes UK. They've asked for privacy while grieving, but also requested that people honor Jo's memory by doing exactly what she would have wanted: tell funny stories, raise a glass, have an adventure, laugh loudly, and live life to the full. Jo is survived by her son Charlie, who has now lost both his mother and brother within 15 months. The family's statement described Jo as an intrepid adventurer, brave, kind, witty, and endlessly loving. She had a rare gift for making everyone around her feel more alive, they said. She lived fully, fiercely, and never did anything by halves. She was blessed with countless friends, drawn to her extraordinary magnetism, and somehow each one felt as though they were among her very best. There will never be another her, the family concluded.