Workout map incomplete

Got the bikes out yesterday and went a huge bike ride. Ride included pavement and trails. I turned my exercise app before leaving the house to track it. At 1.5miles I checked my watch and it was working and would check it periodically during the ride. After getting back home about an hour and a half later the route map of my workout is severely incomplete. I’d say it only tracked about 1/2 of the actual workout. I just updated both my watch and my phone. The included picture shows the starting point across town when we started and finished in the same spot.