Today’s interviewee, Tricia O’Hara, is an American stair runner or ‘vertical runner’ who is ranked first in her age group and sixth in the US. Vertical running (also known as tower running or stair running) is a fast-growing sport that involves racing up the stairwells of the world’s most iconic skyscrapers. It even has its own World Series – the Vertical World Circuit – established a decade ago, which awards world ranking status and world champion titles.

When Tricia’s not racing up 100 flights of stairs, she’s running marathons and Ironman triathlons while splitting her time between America and France where she works as a personal trainer. I put some quick-fire questions to the 52-year-old (yes, she really is 52!) below.