This paper presents the level of student’s performance in swimming outdoor activities at the Faculty of Education, University Jana Evangelisty Purkyně in Ústi nad Labem (PF UJEP) in a test of continuous swimming for 12 minutes. This test is used to evaluate both the general level of aerobic fitness, specific aerobic fitness in the water, and also verifies the effective management of swimming locomotion. Performance was evaluated by basic standards according to Cooper (1980) for the U.S. population, as well as compared with the standard test “12-minute swimming” for the students of universities (Kopřiva, 1993) and with a specific range of test evaluation 12 minutes of continuous swimming adjusted for students of Faculty of Physical Education and Sport, Charles University (FTVS UK), (Čechovská, 2007). The group was created by 87 students, of the first grade of the Department of Outdoor Activites PF UJEP, in which were 57 men and 30 women. In comparison with standards have been demonstrated decreasing levels of swimming performance.