<p>    This study aimed to investigate the physical demands of the ultimate game in middle school ultimate players(aged 13-15yr.) in relation to the year of experience (2yr vs. 3yr). Players were tracked with a global positioning system (GPS) device and heart rate monitor during the 15 minutes of the 5on5 game. Independent t-test was performed separately in each sex to determine the effect of skill level on time spent in different heart rate zones, distance covered in the different speed categories and percentage ratio against the total distance, number of acceleration and deceleration in different intensity levels, and the number of the sprints. Male players with less experience covered more total distance, the distance at Zone3 and Zone4, and low and middle-intensity accelerations than experienced male players. However, the ratio profile shows that experienced male players tend to play more at higher intensity levels (Zone5) and lower intensity levels (Zone2). Mean heart rates were significantly higher for less experienced female players than experienced female players. Female players with more experience covered more distance at a higher intensity level(Zone4 and Zone5), but more acceleration and deceleration were seen at less experienced female players. The ultimate game was a highly physically demanded sport for middle school players. However, according to skill level, players were exposed to different physical demands that players with more experienced players tend to exhibit intermittent sports characteristics. Coaches should consider these characteristics of movements at the coaching site to have a better ultimate game training or utilizing the game for different purposes, such as cross-training.</p>