Masters M35 marathon world record progressionMasters M40 marathon world record progressionMasters M45 marathon world record progressionMasters M50 marathon world record progressionMasters M55 marathon world record progressionMasters M60 marathon world record progressionMasters M65 marathon world record progressionMasters M70 marathon world record progressionMasters M75 marathon world record progressionMasters M80 marathon world record progressionMasters M85 marathon world record progressionMasters M90 marathon world record progression