This document discloses a solution for estimating motion of a user. According to an embodiment, a method comprises in an apparatus: acquiring satellite positioning data received with a satellite positioning receiver attached to a human body and indicating a location of the satellite positioning receiver； extracting, from the satellite positioning data, local motion data representing local motion of the satellite positioning receiver with respect to a reference point and overall motion data representing the motion of the reference point, wherein the reference point is comprised in a framework of the human body； and determining, from the local motion data, a local motion trajectory of a part of a human body to which the satellite positioning receiver is attached with respect to the reference point.
