Located in north county San Diego, San Marcos Tennis Organization is a (501)(c)(3) non-profit tennis organization located in Southern California with the goal of promoting educational, physical, and social development to the community through organized tennis and educational activities. Based on the USTA’s Net Generation program, SMTO encourages young players to participate and develop a healthy competitive spirit in a fun and safe environment that focuses on personal integrity and leadership both on and off the tennis court.