Matthew Edwin Carpenter (born July 20, 1964)[1][2] is an American Ultramarathoner as a trail runner and in high altitude marathons.

In 1990, his VO2 max, a measure of the body's ability to intake oxygen, was calculated to be 90.2 during tests at the U.S. Olympic Training Center, the highest they had recorded.

[3][4] This, and his rigorous training regime—he claims to have run daily for over five years between 1997 and his daughter's birth in 2002[2]—are credited as the keys to his enduring success.

He has won eighteen races; six ascents and twelve marathons, including an unprecedented double, winning both on consecutive days in 2001.

[1] The couple are both members of the Incline Club, their local trail-running group, and are so dedicated to their sport that their wedding was held during a Sunday morning training run along the Waldo Canyon Trail in February 2000.