Looks like a partnership with sportheroes.com, I don’t know who they are, likely French organisation from the language encountered.
You register and authorise a data feed from Strava, Suunto, Garmin or it takes a bunch more. Looks like it only takes new activities, not historic.
There’s a series of challenges available, some for major brands, some from the likes of Mark Allen and Dave Scott Each has a video intro from the guys themselves, and the challenge has a prize draw if you complete it.
You register for the races the same as a real event, via Active.com and the first race is this weekend…this one is free I’m sure other’s won’t be; 5km run, 90km bike, 21km run…I’m in
Bib number in the post (email) apparently.