Mark Saturday 21 June 2025 in your calendar, because this is an event you won’t want to miss! We’re celebrating 450 years of Leiden University with an exciting, sporty challenge: the Leiden Science Run!

Gather your team and take on an energising 4.5-kilometre relay around the Bio Science Park. A day full of fun, movement, and teamwork, all in support of a great cause: the LUF Children’s Fund.

Make sure you’re there – join us and be part of the action!