Charge 5 recording splits every .81 miles instead of every mile

[Emily2123]

I manually told my charge 5 after the last update to record splits every mile while I’m running. Instead, it records them every .81 miles. I have a marathon coming up and really need to know my splits for these last few weeks of training. GPS is not disconnecting, and the total time & distance recorded are correct. But I can’t do the mental math of calculating pace from minutes per .81 miles during a long run.

 

^this was a 4.2-mile run 

[Rookie14]

Having the same problem with my Versa 2.  Can't figure it out.