We now have a set of advanced metrics for runners. There is the Pace of course, but also the GAP (Grade Adjusted Pace) that estimates an equivalent pace when running on flat land. Because running uphill requires extra effort, the GAP shown will be faster than the actual pace you ran. When running downhill, the GAP will be slower than the actual pace. As a reference for GAP, see for example “Pace and Critical Gradient for Hill Runners: An Analysis of Race Records“, Anthony Kay.
In addition there are the Splits, Laps and the possibility to select areas to analyze in more detail.