April 2019 — Participants and supporters gather at Horse Guards Parade near the finish area of the 2019 London Marathon. The scene captures the mix of exhaustion and celebration as runners cross the line against a backdrop of historic architecture and temporary infrastructure erected for the event. Cranes tower above the domes and facades of Whitehall’s government buildings, underscoring the juxtaposition of London’s centuries-old civic landmarks and its ever-changing skyline. The annual marathon, one of the world’s largest, draws tens of thousands of athletes and spectators to central London, filling the ceremonial grounds with color, energy, and determination.