This study aimed to compare BKFO test scores as a screening tool for assessing core stability and muscle endurance in active women aged 18–25 with chronic groin pain and a healthy group in Urmia. This cross-sectional analytical study included 34 participants (17 with groin pain and 17 healthy), selected through purposive sampling. The BKFO test was used to evaluate lumbopelvic stability, and demographic data were collected via questionnaires and physical examinations. Statistical analysis, including the Shapiro-Wilk test and independent t-test, revealed a significant difference in BKFO test scores between the two groups (p < 0.05), with the groin pain group showing poorer stability. The findings suggest that reduced core stability and muscle endurance may be risk factors for chronic groin pain. These results emphasize the importance of targeted rehabilitation and preventive measures to improve lumbopelvic stability in athletes.