Complex sentence: The 800 m event is also known for its tactical racing techniques, the 800 m event is the shortest event that has all the runners converge on lane one, positioning on the cut-in is critical to the outcome of the race.
Split into simpler sentences: The 800 m event is also known for its tactical racing techniques. Because the 800 m event is the shortest event that has all the runners converge on lane one, positioning on the cut-in is critical to the outcome of the race.