Research into human mobility has accelerated in recent years, but work tends to be constrained along 2 key dimensions: spatial extent and temporal length, with studies often limited to a few cities or a few months, or both. To understand the durability and generality of many of the patterns we see in mobility research, here we take a wide aperture, using data from 10 countries; we also look at some of the longest time series available, constructing panels with as much as 6 years of data. We focus on our propensity to interact with others like us in day-to-day activity—" experienced segregation"—as well as other aspects of urban life. Our results suggest that mobility patterns display variability, drifting over time and differing across space.