Fitness App not recording partial miles from Apple Watch

I have an Apple Watch Series 6 running the latest software, watch iOS 9. About a week ago it stopped displaying partial mile information on runs. For example, I run 3.5mi but it will only give me data (pace, heart rate, total time, cadence, etc) for 3 miles. It’s not deleting the additional distance, just not giving any data about it. That’s started a week ago. Anyone know how to resolve? Thanks.