The U.S. Olympic Trials is a huge 10-day track meet that will determine which athletes will make the U.S. Olympic team for the Rio Olympics. It will be held July 1-10 at historic Hayward Field in Eugene, Ore. In this behind-the-scenes photo gallery at what’s been happening the day before the Trials get underway, you’ll see athletes (including world champion decathlete Ashton Eaton) practicing and doing drills, TV crews setting up cameras and microphones, a few iconic images of former Oregon coach and Nike co-founder Bill Bowerman, officials inspecting the track, crews setting up the fan entertainment stage and beer garden, and, of course, Hayward Field in its full green and yellow glory.

RELATED: 2016 U.S. Olympic Trials Track TV Schedule

Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials
Behind the Scenes at the U.S. Olympic Trials