A load carrier for a vehicle roof is disclosed. The load carrier includes at least one load profile which, in use, extends along the vehicle roof. The load profile has a first part and a second part which are movable relative to each other in their longitudinal direction. The first part that in use is positioned next to the vehicle roof having at the top an undercut groove which extends in the longitudinal direction of the first part and in which engages, in a longitudinally displaceable manner, at least one slideway belonging to the second part and having a shape matching the undercut groove.