Registration 2018

All registrations for Castaic AYSO are done online. No more waiting in line at the school!

Registration is done through the Blue Sombrero sports membership system.  Please create an account in the system and select the age group for your player. 

If you registered for a previous season in Blue Sombrero, you don't need to re-register.  Just access your account and sign up for the new season.

Castaic AYSO Online Registration

  • Because this is a new system, you'll need to input all of your information the first time you create an account. 
  • The player fee is $135 for the first member of the family, with a $10 discount for each additional family member.
  • The player fee includes a $17.50 fee to AYSO, so it will be processed on the site as $117.50 + $17.50.


Contact us at if you have any questions or problems.

Age Group Guide




Age group guide

Note: AYSO traditionally organized each age group by the player's age on August 1, which grouped kids together by school year.  US Soccer (the national governing body for all youth soccer in the country) has asked all leagues to start using a calendar year age grouping.  This means the player's division is determined based on their age on January 1.

For more information, please refer to this page at the AYSO website:

AYSO Registration Ages Explained

More info from US Youth Soccer can be found here:

US Youth Soccer Age Groupings Explained