How many miles did Doug run while chasing Otis in westing game?

In "The Westing Game" by Ellen Raskin, Doug Hoo runs a total of 8 miles while chasing after Otis Amber. Doug's running distance is mentioned in Chapter 25 of the book when the characters are discussing the events of that evening. Doug's determination and athleticism are highlighted through his pursuit of Otis, showcasing his commitment to solving the mystery of Sam Westing's death.