Join the Leiden Science Run and run for the LUF Children's Fund

Are you ready for an energetic challenge full of team spirit and fun? On Saturday 21 June 2025, the Leiden Science Run is back! To celebrate 450 years of Leiden University, we’ll be running a relay of 4.5 kilometres (per runner) right through the vibrant Leiden Bio Science Park.
Form a team of four, lace up your running shoes, and support the LUF Children’s Fund. Whether you're a seasoned runner or just looking for a fun day out with colleagues, friends, or fellow students – everyone is welcome! Start a team and pay just €25 – your three team members can then join for free.
The Leiden Science Run is the perfect combination of sport, solidarity and supporting a good cause. Don’t miss out – sign up now and we’ll see you at the starting line!
The Leiden Science Run is organised by the Faculty of Science of Leiden University.
Top fundraisers
View all-
1 €450
Elise Van der Hout
Ja, ik ren voor het LUF Kinderfonds -
2 €300
Danique van Haren
Danique rent voor het LUF Kinderfonds -
3 €250
Madelon Rolleman
Madelon rent voor het LUF Kinderfonds -
R
4
€220
Rembrandt Donkersloot
Ja, ik ren voor het LUF Kinderfonds -
5 €215
Corinda van Bohemen
Ja, ik ren voor het kinderfonds
Below you’ll find the most important practical information.
Pick up race numbers
You can pick up your race number on Tuesday 17 June (16:00–18:00 hr) or Thursday 19 June (12:00–15:00 hr) in the main hall of the Gorlaeus Building (Einsteinweg 55, Leiden). One team member can collect the race numbers for the entire team. Prefer to collect it on the day itself? No problem – team registration opens at 10:30 hr in the Gorlaeus Building. Make sure your team is registered before 11:30 hr. Bonus: participants who pick up their race numbers on 17 or 19 June will receive a free Leiden Science running shirt!
Changing facilities
On the ground floor of the Gorlaeus Building, several rooms are available where you can leave your belongings. Please note that these rooms will not be locked, so using them is at your own risk. If you’d like to change clothes, you can use one of the toilet facilities. To avoid loss or theft, we recommend leaving valuables at home.
Start well prepared
Make sure to wear comfortable running shoes, build up your pace gradually, and join the group warm-up at 11:45. At the finish line, water and fruit will be available to help you recharge. You can find more tips here.
First Aid
First aid staff will be present throughout the day. Need medical assistance? Please report to the registration/information desk or go directly to the first aid station located under the stairs of the Lecture Hall Building.
Accessibility and parking
We recommend coming to the Leiden Science Run by public transport or by bike. If you're coming by car, you can park in the Ehrenfestgarage (Ehrenfestweg 1).
Catering
At the finish line, all Leiden Science Run participants will receive a banana and water. During the event, coffee, tea, water, and soft drinks will be available for purchase.
11:45 – Warm-up led by the University Sports Centre
12:00 – Start of the Leiden Science Run
15:00 – Award ceremony
16:00 – End of the Leiden Science Run