When 99% Invisible producer Katie Mingle’s father Jim Mingle retired, he began walking —a lot. He’d always been a walker, but with more time, he took up long-distance, multi-day trips. And even though he’s an American, he mostly preferred to walk in the UK. In fact, over the course of a decade, he walked the

When 99% Invisible producer Katie Mingle’s father Jim Mingle retired, he began walking —a lot. He’d always been a walker, but with more time, he took up long-distance, multi-day trips. And even though he’s an American, he mostly preferred to walk in the UK. In fact, over the course of a decade, he walked the