|Representing Great Britain|
|1900 Paris||800 metres|
|Representing a Mixed team|
|1900 Paris||5000 metre team race|
In 1896 he won the Northern Counties 1000y and one mile titles. His running successes brought him to the attention of Harold Hardwick, founder of Salford Harriers in 1884; in 1897 Tysoe was persuaded to join the Salford club. Within his first year with Salford Harriers, he had won the AAA championships at one and ten miles. In 1898 he helped the team to win their sixth National Cross Country championship.
At the 1900 Olympic Games in Paris, Tysoe was a favourite in the 800m, having just two weeks before the games broken the 880y world record by running 1:57.8. He won easily, beating John Cregan from the United States by 3 yards. He also won a gold medal as part of the British team in the 5000m team race.
He is buried in Layton Cemetery, Blackpool. His gravestone reads: "In loving memory of Alfred Ernest Tysoe. Amateur Champion half-mile runner of the world.
Born March 21st 1874, Died October 26th 1901. 'Brief life is here our portion, brief sorrow, short-lived care. The life that knows no ending, the tearless life is there.' This stone was erected by the many admirers of this famous athlete, by whom he was held in the highest esteem."