INTRODUCTION: The 1500 meters is a middle-distance discipline. Due the distance of the race, tactic behaviour is important to achieve a good performance. Placing yourself in the first positions at the start of the race can be overrated since the medallists are usually decided in the last laps due the final "kick"(Sandford, Day & Rogers, 2019) or also to the lower loss of speed in the last 200 meters (Hanley, Stellingwerff & Hettinga, 2019). The aim of this study is to analyse the distribution of effort and tactical behaviour during the high-level mens 1500-meter race. METHODS: The men`s 1500 metres competition of the 2022 World Athletics Indoor Championships Belgrade was analysed. Have been included all the athletes participating in the final (n=12). Official data has been obtained from the official results of the World Athletics Federation. The temporal and spatial variables analysed are final time (s), time of each 100 m. partial (s), partial time of every split (100,200,300,400,500,600,700,800,900,1000,1100,1200,1300,1400,1500) (s), number of splits in first position (n), number of 100 m. splits in first position (n) and position every 100 metres (n). Correlations between final time or final position and time of each 100 m. split (s), time of every split (s), number of changes in position during the race (n), position every 100 metres (n) and number of 100 m. splits in first position (n) were performed. Shapiro-Wilk test was performed for checking the sample normality. All data was analysed with JASP (0.16.1.0). RESULTS: Mean final time was 3`41"79±12"31. Significant differences were found between a better split time in every 100 m. (s) and the final time in 100-200 (p 0,629,p<.05), 300-400 (p 0.895, p<.001), 1000-1100 (p 0.825, p<.01), 1100-1200 (p 0,736, p<.01), 1200-1300 (p 0,666,p<.05), 1300-1400 (p 0,695,p<.05) and 1400-1500 (R 0,601,p<.05). No significant differences were found between final position or final time and number of changes in position during the race. On the other hand, inversely significance has been found between the number of 100 m. splits in first position (n) and the final position (n) (R -0,604,p<.05). CONCLUSION: The last third of the race seems to be the most decisive for the final performance. The changes of position or the number of times in first position during the race do not seem to be determining for performance, so take the firsts positions towards the end of the race seems to be the best tactical behaviour.
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