Held Hold annually , the event is a side-by-side rowing race between crews from the Universities of Oxford and Cambridge along the River Thames .

Held Hold annually , the Boat Race is a side-by-side rowing Self_motion race between crews from the Universities of Oxford and Cambridge along the River Thames .

Held annually , the Boat Race is a side-by-side rowing Self_motion race Competition between crews from the Universities of Oxford and Cambridge along a tidal stretch Body_movement of the River Thames in south-west London .