
Hi,
why I didn't have the badge 50ml in december ?
I had already this badge in april with 80,5 km
The only distance related cycling badges for December 2021 I am aware of are:
Record cycling activities totalling 200km or more 2021-12-01 – 2021-12-14.
Record a cycling activity of at least 40km 2021-12-17 – 2021-12-19
Record cycling activities totalling 150km or more 2021-12-20 – 2021-12-31
If it is the 50-Mile Ride badge that you got in April, this is a one time only badge.

it is not automatic?
Should I have pressed the button "challenge"?
Yes, all challenges need to be accepted here: connect.garmin.com/modern/challenge