Treasure State Lacrosse

Missoula Winter Indoor League


Welcome to the Missoula Winter Indoor League Registration WITH Treasure State Lacrosse

This registration session will allow you to complete contact information, sign up for participation, and submit payment.

Please read through each page carefully to ensure that all information is provided accurately. 

To complete registration through our secure site, please have your Visa or MasterCard information available.


Treasure State Lacrosse invites you to hit the turf this fall and winter at our Missoula Indoor Leagues! Build your skill set inside the box - where players develop soft hands, learn to finish inside, and where fast-paced play is the way.  All leagues are open to new or experienced players, for more information please contact

WHERE: Missoula Indoor Sports Arena, 2811 Latimer St.


WHEN: Tuesdays (8-week season)

1/7, 1/14, 1/21, 1/28, 2/4, 2/11,  2/18, 2/25

5th-8th Boys from 6:00-7:00 PM

HS Boys from 7:00-8:00 PM

COST: $90 per player



US Lacrosse Requirement

You must register first with US Lacrosse and then return to this Registration Session to signup.  If you have not already signed up with US Lacrosse, please follow these steps:

  • Step 1:  Obtain current US Lacrosse Membership
    • IF YOU DO NOT HAVE A CURRENT US LACROSSE MEMBERSHIP:  CLICK HERE to go to US Lacrosse Registration and register your player(s). Be sure to PRINT and SAVE their confirmation code(s). Remember to register EACH of your players with US Lacrosse. Each player must have their own unique US Lacrosse confirmation number.
    • TO LOOK UP/RENEW A US LACROSSE MEMBERSHIP:  CLICK HERE to go to US Lacrosse Membership Lookup.
  • Step 2:  Return to this registration and proceed. Later in this registration session you will need to enter the US Lacrosse Confirmation Code that you received in Step 1.


Please direct any questions regarding this registration to:

Kevin Flynn


Phone: (406) 544-4551