This was a sample file using many different types of additional fields and different options in the online registration.
The Additional fields also use multi-lingual selection values. The Online Registration uses all kinds of special functions, validation rules, deviating selection values, and hide options. The Marathon Relay uses one participant entry with additional fields for each runner. The Half Marathon Relay uses a group registration with a participant entry for each runner.
Participants have been activated so you can import the file in your account and play around with it.