Ciara Mageean, Ireland's European 1500m champion, died aged 34. She lost her fight against cancer, surrounded by loved ones. The Irish athlete won gold in 2024 and competed in two Olympics. She was diagnosed with bowel cancer in 2025.

Mageean, from Northern Ireland, was a leading middle-distance runner. She set national records and represented Ireland in Rio and Tokyo. Her greatest achievement was winning the 1500m at the 2024 European Championships. An injury prevented her from competing in Paris. Read more racing coverage.

Despite her illness, Mageean remained positive. She thanked supporters for their help. Tributes poured in from the Olympic Federation and Northern Ireland's First Minister. Irish Prime Minister Micheal Martin expressed his sadness. Related: Former European Champion Ciara Mageean Dies at 34.

This original Runner World brief is based on reporting from The Guardian Athletics. Visit the source for its complete reporting, context and any later corrections.