HOUSTON, Texas (KTRK) -- As thousands of runners hit the streets for the Chevron Houston Marathon Sunday morning, thousands of drivers will want to do their best to avoid them.
Street closures begin leading up to the events for some portions of downtown, close to the start and finish lines. Most street closures through neighborhoods will begin at 6 a.m. Sunday and won't reopen until mid-morning to late afternoon, depending on the location along the marathon routes.
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While more than 300,000 participants, volunteers and spectators will flock to the race routes, just as many will need to get around the largest single-day sporting event hosted in the city.
A detailed list of closed streets, as well as maps of the event can be found at the Chevron Houston Marathon website.