Ann Trason (born August 30, 1960) is an American ultramarathon runner from Auburn, California. She has broken twenty world records during her career. Trason's ultra career began when she entered the 1985 American River 50 Miler at age 24 and both won and set a course record. She returned 8 years later and dropped her time by an hour to establish the 6:09 female course record that still stands.Trason did not finish her first two times trying to run the Western States 100; in 1987 she dropped out due to knee problems and in 1988, near the finish line, from dehydration. She finished and won it in 1989. She has won Western States 14 times in all, most recently in 2003. She held the women's division course record for 18 years (17:37:51, set in 1994) until it was broken by Ellie Greenwood in 2012.