Estimated finish time

Hi there
I have an issue while using training mode in my Garmin Instinct. Setting a training target and choosing a distance (for instance 5 km) garmin shows unearthly estimated finish time - it is value of about 9-10 hours (see the picture - field: Sz.cz.uk: 9:28:51) while my pace time was about 6:01/km and even lower. Oddly enough similar value shows even during 15 km run. Such unearthly value is shown througout trainings and in my opinion it does not appear incidentally. Did anyone have a similar case with the device? BTW: on the picture you can see as follows: distance left (1.78 km), estimated finish time (9:28:51) and pace (6:01/km). ciq.forums.garmin.com/.../1468288.jpg