Thousands will gather to run and watch the Dallas Marathon as it winds through the city Sunday morning. While the weather was mild for those participating in the 5K 10K runs Saturday, temperatures will take a tumble by Sunday’s start time. The forecast calls for wind chills in the 20s. I t’s on the mind of Brandy Liddell, who drove from St. Louis to compete in the marathon relay. “It is. We were not prepared for that,” laughed Liddell. “We thought we were going to get a little warm weather out here, but I’m excited. I heard the crowds out here are really lively.” Runners are prepping with layers. “I think I’ve packed a total of about five different layers that I can peel off all throughout the race,” said Tyler Riola of McKinney, who will compete in the full marathon. Race organizers are partnering with Our Calling. The non-profit, which is usually closed on Sunday, will open at 5 a.m. to offer hot food and shelter to those living on the streets and disrupted by the run. They’ll also be collecting clothes left along the race route for the city’s homeless. “Most races do that because we’re known for shedding our clothes and it’s, you know, it’s a way to do something for yourself and help others. So it’s a win, win,” said half-marathon runner Julie Charbonnet. ...read more read less