This study aimed to examine the effects of a mental training package o
n the performance of a 1600-m run. Participants were 3 male triathlete
s and 1 male elite runner. A single-subject multiple baseline across i
ndividuals design was employed to evaluate the treatment package. Resu
lts demonstrated that the mental training package was effective in imp
roving the running performance of the three participants who received
intervention. Social validation results were favorable and indicated t
hat participants enjoyed using the mental training package and were pl
eased with the results. Further, coaches felt that the results were im
portant, especially those for the elite track athlete.