Yes. First you have to create own profile in our registration system www.spartanrace.onlinesystem.cz
Please, look at simple manual hot to edit your registration:
On the web page www.spartanrace.onlinesystem.cz create your own profile with e-mail you registered to races.
After you sign in click on the upper right corner on green „character of human“ button. Page with all your future registrations to races will be shown.
Choose the registration, which you would like to substitute and click on the green „frame with pen“ button on the right side of the screen.
After you click on the green button, you will see registration form, where you are able to modify any info you like. Please fill out all information regarding substitution and click on update/safe button. New registration confirmation will be send to the e-mail you filled out in the form and approved within 120 minutes of finishing substitution.
For season 2018 change of the heat is not allowed.
ATTENTION: Online editing of your profile is available till midnight of last Tuesday before event.