Marathon Heater, Inc. was founded in 1996, with 3 employees and one product, cartridge heaters. Our commitment to customer service and engineering support has brought rapid growth. In 2002 we were selected by Inc. magazine as one of the 500 fastest growing privately held companies in the United States. Marathon currently has 2 manufacturing locations, our 40,000 square foot headquarters in Del Rio, TX and a 12,000 square foot manufacturing facility in Udaipur, India to service our eastern hemisphere customers.