As well as traditional bike hire services, there are also modern bike-sharing schemes where you do not have to return the bike to the same location. You collect the bike from one point and can leave it at various designated locations (back-to-many).
These systems operate via an app and are primarily intended for flexible, short-term use within transport regions:
Leuven transport region
Blue-bike (back-to-many)
Blue-bike offers a flexible bike-sharing system where you can return a bike to various official locations.
Further information: https://blue-bike.be/vervoerregio-leuven/Flemish Periphery Transport Region
Nextbike (back-to-many)
Nextbike uses a ‘back-to-many’ model, which means you can return the bike to any of several locations within the region.
Further information: https://www.nextbike.be/vlaamserand/nl/Mechelen Transport Region
Donkey Republic (back-to-many)
Donkey Republic operates a ‘back-to-many’ system within the Mechelen region.
In Flemish Brabant, this service is available in Boortmeerbeek and Kapelle-op-den-Bos.
Further information: https://www.donkey.bike/nl/cities/mechelen-region