Event Participation Athletes Boston Marathon London Marathon World Records Athletic Events Long-Distance Running Berlin Marathon Themed Races Centenarian Athletes Disney Running Events Extreme Sports Harry Styles TCS Mini London Marathon Runner Tracking Athlete Behavior Road Runners Race Participation Mini-Marathon Running Kielder Marathon Race Categories International Events Marathon Debut Health and Fitness Half Marathons Participants Women's Marathon Celebrity Marathon Performances Race Logistics Women in Sports Athlete Participation Chicago Marathon Event Timing Olympic Aspirations Harry Styles' Marathon Achievements Course Challenges
A new six-wave format aims to ease course flow during a packed week of civic events.