Within the city limits, the density of residences surrounding the highway rapidly increases as the terrain flattens. The highway intersects Mapleward Road, then diverges from the power transmission lines and curves southeast into suburban Thunder Bay. It meets Secondary Highway 589 after passing the Emerald Greens Golf Course. The route then travels through North McIntyre, formerly a separate community which was annexed. It descends through a wide muskeg, after which it is crossed by several power transmission lines. The highway enters urban Thunder Bay immediately thereafter, where it passes to the west of County Fair Mall before ending at an intersection with the Thunder Bay Expressway. The road which carries Highway102 continues through Thunder Bay as Red River Road, and was once part of the highway.