entertainment

Race Across the World pair Mark and Margo recall caring for sister who died of myelofibrosis

In-laws and Race Across the World contestants Mark and Margo say caring for Julia during her illness brought them together, and that her 2022 death and final wish for their continued closeness inspired them to join the series.

Apr 2nd 2026 · United Kingdom

Insights

  • Julia, Mark's wife and Margo’s sister, died in 2022 from the rare blood cancer myelofibrosis.
  • Mark and Margo were in-laws who did not get along at first but grew closer while caring for Julia.
  • Julia's last wish was for them to remain close, which helped motivate their application to Race Across the World.
  • Mark says Margo eased his stress on the show and that she gave Julia a renewed will to live during her illness.