Hey AndyHoff,
We hate to hear you're having issues with your music pausing unexpectedly during workouts.
Are you using a GPS only model, and therefore unable to stream the Time to Run, so downloading locally to listen while on your run? If so, the following steps provide more information on downloading these episodes and if this particular episode continues experiencing issues with playback, remove it using the steps below and redownload it:
Download Time to Walk or Time to Run episodes
1. On your iPhone, open the Fitness app and tap the Fitness+ tab.
2. Look for the Time to Walk or Time to Run heading, then tap Show All.
3. Find the episode that you want to download, then tap the Add button.
If you subscribe to Apple Fitness+, two of the latest Time to Walk or Time to Run episodes automatically download when your Apple Watch is charging and connected to Wi-Fi. If you don't have enough storage space available on your Apple Watch, your Time to Walk or Time to Run episodes may not be downloaded. After you've listened to episodes, they'll be removed automatically and new episodes will be downloaded when they've been released.
If you use an Apple Watch (GPS + Cellular) with an active mobile data plan, you can stream episodes. If you use an Apple Watch (GPS), you can download additional episodes to your watch over Wi-Fi.
Time to Walk and Time to Run aren't available on iPad or Apple TV and are only playable on an Apple Watch Series 3 or later, or without an Apple Watch on an iPhone 8 or later with the use of Bluetooth headphones.
Remove downloaded Time to Walk or Time to Run episodes
1. On your iPhone, open the Fitness app and tap the Fitness+ tab.
2. Look for the Time to Walk or Time to Run heading, then tap Show All.
3. Find the episode that you want to remove, then tap it.
4. Tap the More button, then tap Remove from My Library.
If you don't want to add episodes automatically, open the Watch app on your iPhone, tap My Watch, then scroll to Workout. On your Apple Watch, go to Settings > Workout. In the Workout tab under Time to Walk or Time to Run, turn off Add New Workouts to Watch.
This is all outlined further here: Use Time to Walk or Time to Run – Apple Support (UK)
Take care!