In 1938, Lash set a meet record of 14 min., 39 sec., for 5,000 meters at the Amateur Athletic Union indoor national championships.

[1] Research done at the Harvard Fatigue Laboratory published in Science in 1937 found when running Lash had an oxygen intake of 5.35 L/min and commented, "This far exceeds previous records".

Having married Margaret Mendenhall in 1938, Lash began a law-enforcement career with the Indiana State Police, then became an agent with the Federal Bureau of Investigation in 1941.

He also was elected to five terms (1973–1982) as a Republican member of the Indiana State House of Representatives, serving Fountain, Montgomery and Parke counties.

[3][4] Lash died of spinal cancer at a hospital in Terre Haute, Indiana, and is buried in Rush Creek Cemetery near Tangier in Parke County.