To the middle (7)
(Other definitions for inwards that I've seen before include "Towards the centre" , "Towards the inside" , "Towards the interior" , "Centripetal" , "Opposite of outwards" .)
(Other definitions for halfway that I've seen before include "Equally distant from the extremes" , "At the mid position" , "At the middle" , "Where those who compromise should meet" , "50 per cent of the distance" .)