Mount Si Lacrosse Club serves youth and high school lacrosse players in the Snoqualmie Valley.


Welcome to the Mount Si Lacrosse Online registration system. If you need any assistance please contact us at: 


FOR CURRENT PLAYERS. Please make sure that your child's grade level (2020/2021 school year)  and your contact information is updated before completing the registration. 

This registration requires that each participant have a Valid US Lacrosse Membership. If you do not have a US Lacrosse membership the registration system will direct you to the US Lacrosse site to obtain a membership. US Lacrosse memberships are good for one year at a cost of $30.00 for 14 & Under and $35.00 for 15-18 yr old players. Want more information about US Lacrosse memberships? go HERE