Los Angeles

The city is both flat and hilly.

An excerpt from the article 37 facts about Los Angeles

The highest point in the city itself is Mount Lukens - the peak of the San Gabriel Mountains, with a height of 1547 m. The eastern end of the Santa Monica Mountains stretches from the city center to the Pacific Ocean, separating Los Angeles from the San Fernando Valley. There are much higher mountains around the city. To the north lie the San Gabriel Mountains, which are a popular recreational area for Angelenos. The highest peak in the Greater Los Angeles area is Mount San Gorgonio, at 3506 m.