If high speed is necessary, you can attempt to run. You can move up to triple your speed (that is, triple your speed per second ƒ so, for a six second run, that's 18x your speed per round!) in a straight line over relatively level terrain. You cannot run through rough terrain, while wearing wildly impractical shoes (such as high heels or stilts), or while balancing on shifting or rocky terrain. While running, you must move for at least three seconds in a continuous straight line. Thus, you can take two separate run actions on your turn, each in a different direction.