Marin Tremors is the competitive travel ball and summer club program for Marin Girls Softball.  Marin Tremors is open to all registered Marin Girls Softball players and fields teams from 8U to 18U. 

Marin Tremors hosts teams with players that range from the elite to the developing player.   We are incredibly proud of this focus, ensuring that every player who wants to continue developing their competitive softball skills has the opportunity to do so.

Our programs start in January (Tremors Black), May (Tremors Gold and Club), and late August/early September (Tremors Fall Ball). 

Click here to learn more about the Marin Tremors vision and find answers to FAQs.

Marin Tremors Tryouts

We will be holding tryouts for our summer 10u, 12u, 14u, and 16u/18u teams on Sunday, April 26th 2026. These tryouts will be at Del Mar School in Tiburon.

Tryouts for our 8u team will be on Saturday, May 9th at Bernard Hoffman field in San Rafael. Tryouts will be on Field 1, which is the field furthest from the road.

More information and tryout registration info will be posted and emailed to MGS players by April 1st.

Thanks for a great 2025 tournament everyone!  Our dates are set for 2026, and we will be posting more information later in the Spring.

   View all the tournament bracket winners 
here on the Norcal USA site.

And THANK YOU to our MSS 2025 sponsors:

• The Hub -San Anselmo
• Pixels Arcade & Taproom – San Rafael
• T&B Sports – San Rafael
• Chris Jurach Real Estate

Be part of the Tremors training experience!  Click here to view current clinic offerings.

Click here to learn more about coaching with Tremors. Coaches register here:

Two distinct softball programs tailored to different player commitments and skill levels: the Club Ball program and the Travel Ball program.

Club Ball Program: This program is ideal for players who are developing their skills and may not be ready for travel ball commitments or those whose families are unavailable during the summer. Teams are geographically formed and available for 8U, 10U, and 12U players. Teams practice once a week and play back-to-back games on Saturday mornings.

Travel Ball Program (Black & Gold): Geared towards players deeply passionate about softball, our Black and Gold programs involve more competitive and frequent gameplay. Players must demonstrate their skills at tryouts to be selected to our 8U, 10U, 12U, and 14U players. Teams practice 2 to 3 times per week and participate in 5 to 6 local tournaments in the North Bay area.

Learn more about our programs below or compare them here.

Looking for Tremors gear?  Click here.

Check out our impressive list of Tremors who went on to play softball in college!