Marten Transport, Ltd. is a temperature-sensitive truckload carrier. The Company focuses on transporting and distributing food and other consumer-packaged goods that require a temperature-controlled or insulated environment. The Company operates through four segments: Truckload, Dedicated, Intermodal and Brokerage. It operates throughout the United States and in parts of Canada and Mexico. The Company's medium-to-long-haul traffic lanes are between the Midwest and the West Coast, Southwest, Southeast, and the East Coast, as well as from California to the Pacific Northwest. It provides regional truckload carrier services in the Southeast, West Coast, Midwest, South Central and Northeast regions. It also offers loading and unloading activities, equipment detention and other ancillary services. The Company's Truckload segment provides a combination of regional short-haul and medium-to-long-haul full-load transportation services.