A woman led state troopers on a 75-mile chase Sunday from the western metro area along Interstate 70 before pulling over in mountainous Summit County. When she didn’t stop, troopers radioed ahead to colleagues, who raced into positions along the I-70 corridor and cleared traffic as a precaution. The woman finally stopped after 66 minutes and was taken to a hospital for medical checks before authorities arrested her for failing to stop. Nobody was hurt. “We’re still doing the investigation into why this happened.