Longest ever running race. Share. The longest race ever staged was the 1929 trans-continental race from New York City to Los Angeles, California, USA of 5,850 km (3,635 miles). The Finnish-born Johnny Salo (1893-1931) was the winner in 1929 in 79 days, from 31 March to 17 June.
A lactic acid test is a blood test that measures the level of lactic acid made in the body. Most of it is made by muscle tissue and red blood cells.When the oxygen level in the body is normal, carbohydrate breaks down into water and carbon dioxide. test for lactic acid is done to: 1  Check for lactic acidosis. 2  See whether the right amount of oxygen is reaching the body's tissues. 3  Find the cause for a high amount of acid (low pH) in the blood.
Most of the lactic acid diffuses out of the muscles into the bloodstream and is gone from the muscle tissue within 30 minutes after exercise stops. Subsequently, the lactic acid is picked up by the liver, heart, or kidney cells, which can use it as an energy source. Additionally, liver cells can reconvert it to pyruvic acid or glucose and release it back into the bloodstream for muscle use, or convert it to glycogen for storage.