1988 United States Olympic Trials (track and field) the only race where five men have run under 48 seconds for 400 metres hurdles. 1988 U.S. Olympic Track and Field Trials results Key: 1988 United States Olympic Trials (track and field) The 1988 United States Olympic Trials for track and field were held at IU Michael A. Carroll Track & Soccer Stadium in Indianapolis, Indiana. This is the only time this venue has been used for the Olympic Trials. With the 2013 installation of Field Turf, it is unlikely to host the event again. Organised by The Athletics Congress (TAC), the nine-day competition lasted from July 15–23. The national
800 metres have been known to use a negative split to their advantage. A positive split is achieved by running the first lap faster than the second lap, and a negative split is achieved by the opposite, running the second lap faster than the first could help. The current world record holder, David Rudisha, runs using a positive split strategy. In his 2012 Olympic race, he ran his first lap in 49.28 seconds and his second lap in 51.63 seconds. Theoretically, an even split is the most effective strategy, but it is nearly impossible to achieve due to the race's length. As