Recording Won't Transfer from my Apple Watch to my iPhone
When you're done recording, Slopes on Apple Watch will send your recording over to your phone so you can view your stats. However, depending on how much battery you have left and if you're near WiFi, watchOS might delay the transfer and wait for what it considers a better time. You'll see an indicator in Slopes on Apple Watch while it is waiting on the transfer.
If the Watch transfer is taking a while, tap on Saving to Phone to get the option to force-retry. If you're back with both devices on WIFI and aren't at less than 10% battery it should happen within a minute.
If that doesn't work the first time, restart both your Apple Watch and your iPhone, and run through the above again.