1. A method for generating a graphical display of operational data of a mining machine, the method comprising: receiving or accessing terrain information for multiple geographical locations; receiving or accessing operational data of the mining machine associated with one or more geographical locations of the terrain information and on a travel path of the mining machine over time, wherein the operational data is based on the response of the mining machine to terrain variations at the respective geographical locations; and generating a display, the display comprising: a terrain image based on the terrain information for the multiple geographical locations; and a graphical trail representing the travel path on the terrain image based on the operational data associated with the one or more geographical locations, wherein the appearance of the trail is variable along the trail and based on variations in the operational data.