The organization of the Leiden Marathon consists of a board and a large group of volunteers supported by the marathon agency. The board is thinking about the future and is leading a large group of rayon heads, coordinators, careers, starting and finishing groups, and the staff in issuing starting numbers, etc. The marathon agency is the driving force behind the Leiden Marathon and is engaged in collecting and sponsorship, purchase of medals, employee clothes, promotion teams and directing trainees and graduates.

And of course they support the board. The board and marathon agency are busy organizing the Leiden Marathon throughout the year. Most volunteers are active in the last month before the marathon day. The Leiden Marathon is organized by a group of more than 1,100 employees (most of them are volunteerd), each of which is an indispensable link between the Leiden Marathon and the Race.