The distance of the fourth leg of a standard 4x100 meter relay is 100 meters. Each of the four runners on a team sprints a designated 100 meters, culminating in the final leg where the baton must be successfully passed within the exchange zone. The relay is known for its emphasis on speed, teamwork, and precise baton exchanges, making the fourth leg critical as it often determines the outcome of the race. Relay teams must execute their strategy flawlessly to secure victory.