The Dutch Olympic Committee (NOC) and the Dutch Sports Federation (NSF) co-operate with IKAT in order to find out whether information can be extracted from training data of professional endurance sportsmen and sportswomen. The goal is to apply several techniques from the area of data mining, hopefully leading to new insights that enhance training results. * Progress in 2003. A pilot study was defined together with Marti ten Kate of NOC*NSF. This pilot project started in November 2003.