The Roparun Foundation is almost entirely dependent on volunteers. In total, more then 400 volunteers are involved in the Roparun. Fifty of them spend all year on the organisation of the event; the remaining 350 are mainly active during the event itself. Volunteers are involved in every part of the Roparun. For example, they are involved in the build-up in Paris and Hamburg, supporting the teams on the course (motor team, build-up and checkpoint crew, emergency teams), and activities at the finish location (Coolsingel) in Rotterdam.