TCS Amsterdam Marathon 2026

Groundbreaking cancer research

Cancer is a global challenge – so we act globally
Cancer doesn’t stop at borders. That’s why KWF works together with cancer organizations, doctors, researchers and talented young scientists in Europe and beyond. By pooling knowledge, funding and experience, we can find better treatments faster – especially for people with rare forms of cancer. This increases the chance that people, wherever they live, can live longer and better lives.

What your run makes possible
When you run for KWF or donate, you:
•    Make international research into (rare) cancers and the training of young cancer researchers possible;
•    Help new treatments reach patients faster;
•    Give more people, in more countries, a fair chance of life.