Seward is located on the southern coast of the Kenai Peninsula, a broad stretch of land dominated by mountains and expansive icefields. The town is tucked amongst that rugged landscape on the shore of Resurrection Bay. Seward's harbor, cruise terminal, railroad depot, and a few Seward hotels are on the northern end of town. Also in this area is a pickup point for the Park Connection Motorcoach and several restaurants, shops, and fishing charter offices. Seward's downtown is just over a mile away from the harbor area. Mt. Marathon towers above town to the west, and bay waters border to the east.
Seward is about 130 miles from Anchorage. It is the southern terminus of the Alaska Railroad and the Seward Highway, the only thoroughfare out of town. That road connects to the Sterling Highway and Anchorage.
Seward sits just beyond the eastern border of Kenai Fjords National Park. The park's remote bays and tidewater glaciers are accessible by day cruise or kayak trip out of Resurrection Bay. Exit Glacier and a small park visitor center are 11 scenic miles out of town via a road that runs alongside the Resurrection River.