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Tremors Fall Ball for 16U/18U players

If you're a 16U or 18U player looking for a fun fall-ball experience, Marin Tremors is putting together a team for this fall.  If you don't play A-ball but want to get reps in and hang out with a fun group of players, this could be for you.  We'll practice and play local tournaments.  No travel out to the I-5, SoCal, or Nevada.  Low fees. 

But we do have rules.

Rule #1: No Drama.

Rule #2: Keep it fun!

Rule #3: Refer to rule #1 and #2.

Click here to learn more!

Are You New To Marin Girls Softball?

To receive updates from Marin Girls Softball about the upcoming 2023/24 season, click on the link below.

Click here to receive updates on the upcoming 2023/24 season.

MGS players from previous seasons are already recorded in the system.

Coach Registration

About Marin Girls Softball

Marin Girls Softball League, with almost 1,000 registered players, is one of the largest youth softball leagues in California.

We're a volunteer-driven league for youth fast-pitch softball in Central and Southern Marin County.  We operate as a USA Softball district program - providing an educational-athletic program for any age-eligible child.  Any child can register and all registered kids play. 

Marin Girls Softball provides programs for 5 to 15-year-olds; from beginner to competitive travel ball.  Our goal is to help our players develop both life skills and a love of the game, through a positive coaching experience. 

This website is the central location for all League, Travel Ball, and District news.  Click on the links below to learn more about the teams in your district.

Marin Girls Softball Mission Statement

Marin Girls Softball aspires to be an outstanding educational-athletic organization, providing and expanding opportunities for softball players across Marin, from beginner (recreational) through to competitive travel-ball programs.

Marin Girls Softball aim is to offer a high-quality experience for every player.  A high-quality experience is one in which every player: 

  1. Is coached using the principles of positive coaching, developing confidence and self-esteem in every player
  2. Has fun at practices and games
  3. Feels like an essential part of the team
  4. Learns to promote sportsmanship, integrity, and teamwork 
  5. Learns “life lessons” that have value beyond the playing field
  6. Learns the skills, tactics, and strategies of the game, and improves as a player
  7. Has the opportunity to develop their game to their desired level: recreational, competitive travel-ball, and preparation for high school softball.

Marin Girls Softball recognizes that coaches, officials, and parents are the people who most directly make this all possible. It is our goal to provide every coach, official, and parent with a clear understanding of this mission, and the tools necessary to succeed.  

We are committed to creating a positive culture, in which coaches, officials, parents, administrators, and players, work together to achieve our mission. 


MGS Recreation Season Age Division Overview

Age is based on child's age on September 1st leading into the Spring season.
6-U:  Players 5 and 6 years old as of September 1st of the calendar year prior.  T-Ball and some coach pitch
8-U: Players 7 and 8 years old as of September 1st of the prior calendar year. Some girl pitch, some coach pitch.
10-U: Players 9 and 10 years old as of September 1st of the prior calendar year.  Girl fast pitch, some coach pitch.
12-U:  Players 11 and 12 years old as of September 1st of the prior calendar year.  Girl fast pitch.
15-U:  Players 13 - 15 years old as of September 1st of the prior calendar year. Girl fast pitch.

MGS email contact

(individual districts check your own page above)