Joining The Big Challenge ONE is simple and gives you access to all that The Big Challenge offers.
Doing so at the beginning of the year is a way to benefit from it all year long, but it is also a way to help us by providing the necessary resources to cover our costs all year long and to offer ever more motivating prizes to the students during the events.  
This is why we would like to encourage people to register at the beginning of the year by reducing the registration fee