It may be useful to be able to predict race walking performance based on relationships between standard race velocities and physiological variables such as blood lactate (Blac) or maximum oxygen uptake (VO2max), however laboratory tests for this purpose are impractical in most situations. The aim of this study was to develop a method to predict competition performance and/or physiological variables from performances in other distances and/or a field based tests such as a time trial. Laboratory treadmill tests were conducted on 68 athletes to find Blac,VO2max and race walking economy (ml O2/kg/km). Twenty-one of the same subjects then completed a 2000m full-effort time trial for calculation of their race velocity (km/h). The values obtained were compared and combined with the performances of the athletes over standard race walking distances and the performances of elite athletes to produce a nomogram (a diagram representing the relations between three or more variable quantities) that could be used to predict any of the variables if one or more of the values was known. The findings support the use of time trials to predict velocity at VO2max and show there is a link between laboratory and performance variables that can be used in coaching.