The invention relates to an optimal path of motion for a training simulator. Systems, methods, and non-transitory computer-readable medium encoded with executable instructions for training an operator. One method includes generating a simulated mining environment and a simulated shovel including a simulated dipper, receiving a first series of operating commands from a first operator for moving the simulated dipper, and calculating an optimal digging path based on the first series of operating commands. The method also includes generating a graphical representation of at least a portion of the optimal digging path and displaying the graphical representation to a second operator, wherein the graphical representation provides a guide to the second operator for moving the simulated dipper along the optimal digging path. The method further includes receiving a second series of operating commands from the second operator for moving the simulated dipper, and automatically modifying the graphical representation based on the optimal digging path and the second series of operating commands.