Justin Bieber's been out of the spotlight for the majority of the year -- focusing on his own health -- and it looks like he's capping off 2023 going downhill ... literally, that is.
The singer was spotted in Aspen Saturday, where he was snowboarding ... a bit of a tradition for him this time of year. He appeared to be shredding here all by his lonesome, but he did have some company going up the mountain -- chatting up a fellow chairlift rider.
JB looked fairly stone-faced and serious cruising down the slopes .