I added one challenge in my Garmin Connect App in Iphone.Hiking in July. The challenge is to get 5 hours of hiking in July. I am using my Fenix 2 device.
I started "Hike" activity in the watch and did in the last 7 days 4 hiking activities: 10/jul 2:23, 11/jul 2:48, 13/jul 3:28 and 14/jul 3:06.
So, until now, I have 0 (zero) minutes counted in the challenge, and the badge was not assigned to me.