The Denver metro area’s rush-hour traffic is a pain, but how much worse could it be? Turns out, a lot worse — if you live in Boston, Chicago or Los Angeles. In fact, 18 U.S. cities ranked above Denver on an annual list of the 25 most congested cities in the country. Still, Denver commuters’ aggravation is well-founded: The average driver traveling during peak commute times lost a cumulative 83 hours to congestion in 2018, according to the annual report from INRIX Research, which analyzes traffic data around the world.