The city straddles Interstate 5 at a point almost exactly halfway between Seattle, Washington and Portland, Oregon. The historic downtown and most of the city's amenities lie on the east side of the freeway, nestled at the base of a small range of forested hills. On the west side of the freeway are parks, farms, a few subdivisions developed in the hills to the west, and a centralized shopping district, the Twin City Town Center. The Chehalis-Centralia Airport (CLS) is located immediately west of the freeway towards the northern end of the city. From numerous vantage points in the hills just west of town, one can see Mount Rainier, Mount Adams, and Mount St. Helens—weather permitting. Chehalis is a frequented stop by bicyclists while on the annual Seattle to Portland Bicycle Classic.