We all love how informative the workout summary on the COROS app workout details page is. However, some users may notice that the best mile/km pace from the workout summary isn't the same as their best mi/km lap pace found on the lap details chart. The reason is because the watch calculates the best mile/km pace based on consecutive segments rather than rolling segments. As a result, if your lap setting isn't 1 or if you have a few shorter laps, the best mile/km pace is likely to be different than the best pace highlighted in blue in the lap details chart.
We may consider changing the best mi/km pace calculation to rolling based in the future.