The Olympic record for the marathon is 2.00 h, 9.00min, 21.0sec. If the average speed of a runner
achieving this record is 5.436 m/s. What is the marathon distance?
5.436 m/s * (2.00hr * 3600s/hr + 9.00min * 60s/min + 21.0s)
= 5.436 m/s * 7761 s = 42188.796 m