Some S1 races offer the possibility of double registration, participating in two or more distances.
The conditions of participation are as follows:
- Anyone who arrives at the start in time for the start of the next race and has regularly registered for the challenge through the online registration form can participate.
- Registration for the Challenge is unique and anticipated but the choice of the race can be made at the moment, just show up between the first and the last starting time on the starting line of the chosen race
- For ITRA purposes, the score of the longest race, or if completed, of the combined race will be sent.
- The costs and any special conditions are indicated in the registration form.