St Albans runner Dave Oh is taking on the huge challenge of running the virtual Virgin London Marathon for Kawasaki Disease awareness - Credit: Societi A St Albans runner is taking on the huge challenge of running the virtual Virgin London Marathon, in aid of a charity that is literally close to his family's heart. Dave Oh is running a 26.2 mile course for Societi - the UK Foundation for acquired heart disease in children - and Great Ormond Street Hospital. Dave's challenge is inspired by his son Jayden, who has spent his life battling Kawasaki disease. St Albans runner Dave Oh's son Jayden - now 13 years old - was the first child in Hong Kong to ever undergo a triple heart bypass at the age of just 5