Terrence Mahon

Terrence Mahon (born October 5, 1970) is an American distance running coach. Mahon coaches many notable long distance and middle distance runners, including Olympians Deena Kastor, Anna Pierce, and Jen Rhines. Mahon also coached Ryan Hall for five years. In 2011 he coached Morgan Uceny to the number one world ranking in the 1500 meters, coached ultra runner Josh Cox to the second fastest 50k time in history, and guided Irishman Alistair Cragg to a new National Record in the 5,000 meters, and in 2012 coached Alistair to European and Irish records in the road 5k at the Carlsbad 5000.

Mahon attended Villanova University as an undergraduate, where he was an All-American runner. Mahon ran a 2:13:02 in the Chicago Marathon in 1997, and won the U.S. 20 k Championships. He qualified for the Olympic Trials in both the marathon and 10,000 m, but was unable to qualify for the Olympics.

In 1998, Mahon married runner Jen Rhines, who also competed for Villanova. They moved to Mammoth Lakes, California to train, where Mahon later became a coach for Team Running USA, now known as the Mammoth Track Club.

American marathon record holder and 2004 Olympic Bronze medalist Deena Kastor says this about Mahon:

I owe the longevity of my career to him being so knowledgeable and for reinventing training and therapy to keep me healthy. One of Terrence's greatest strengths is his insatiability to learn, not just about coaching, but life. He is full of so much knowledge and keeps reading great books and visiting with other brilliant people to continue growing.

...
Wikipedia