If you already have purchased your USAT annual membership to participate in a past event this year, you can use the same membership for other triathlons on ACTIVE.com. To find out your membership number, please use the USAT website: https://www.teamusa.org/USA-Triathlon 

Note: Please make sure your ACTIVE account name, date of birth, gender and address are same with your USAT's; Event start&end date is before USAT annual membership expired date or else you will need to renew USAT annual membership from USAT website.