Since updating to WatchOS 4, the app very often crashes when I try to finish my workout on my watch (Don't think it made a difference if I started it on my watch or my phone) and even worse, sometimes it crashes during a run...
Ran a marathon September 10th and started the run on my iPhone (on me primarily for Spotify) and around the 35 km mark the watch app crashed on my watch and continued on my phone - now I had voice feedback in my Airpods regarding time and distance but the app tried to restart on my wrist and somehow was around 800 meters behind and even worse 3-4 minutes behind... This is just beyond unacceptable during an important run - My watch became totally useless and I could have just run with my phone on me and the airpods... And that's NOT why I have it


So for now I use the build in

and just manually enter them on Nike+ community (I have a challenge going on with a friend)