At MTS, we offer 4 school run sports teams; Cross Country (Fall), Volleyball (Fall), Basketball (Winter), and Track & Field (Spring).

In addition to participation in four MTS sports leagues, our parents often coordinate MTS students to field other teams around the Bay Area. We have access to a number of great sports programs, both in Marin and San Francisco.

Contact Cathal Murray (, Athletic Director, for more information.

Cross Country

Grades 3-8, Boys & Girls (Fall)

Students run in a variety of training configurations — sometimes as a team, sometimes in small groups, and other times individually. Our 3rd-5th graders train on campus, and our 6th-8th graders usually run off-campus in the immediate neighborhood. Both our 3rd-5th grade and our 6th-8th grade teams compete in several cross country meets throughout Marin County.


Grades 6-8, Girls (Fall)

We field a girls team for each grade level in 6th-8th grades. Players are taught the fundamentals of the game by experienced coaches. Building on foundational skills, our teams regularly practice new techniques and strategies to be successful in inter-scholastic competition. Volleyball teams practice twice a week and play in the CYO League on Sunday afternoons. 


Grades 4-8, Girls & Boys (Winter)

We field a boys team and a girls team for each grade level in 4th-8th grades. Each team practices twice a week in our gym and competes in the CYO league with weekend games.

Track & Field

Grades 3-8, Girls & Boys (Spring)

Our Track and Field team competes in six events — three running events (sprints, middle distance, and relays), and three field events (shot put or softball throw, long jump, and high jump). During track practice, students work on all of the events with the option to specialize. There are two weekday Marin County League track meets for the 6th, 7th, 8th graders, and two weekend CYO League meets for the 3rd, 4th, and 5th graders. 

Sports Teams Outside of MTS

For activities outside of MTS, typically a Kindergarten parent self-volunteers to organize the teams and practices, and keeps track of registration deadlines. In many cases, an entire class will play together on a co-ed team. In other cases, groups of MTS students will play on a team with players from other private, public, and parochial schools. MTS families see this as a great benefit – many lasting friendships outside of MTS have been made through participation on city and Marin sports teams. SF families who attend school in Marin can participate in Marin sports leagues as well as SF leagues.