Mail carrier Leon Martinez closes up his delivery truck with armloads of mail to deliver to homes in his daily route of 334 residences and 110 businesses. "I absolutely love this," Martinez said. "I enjoy walking, being outside and the customers." Martinez started his route between San Mateo Boulevard and Alvarado Drive Northeast seven years ago. "Of the 334 homes I deliver to, I probably know 325 of them," he said.