A crowd scientist is helping the Boston Marathon manage a growing field of 30,000-plus runners

Running the Boston Marathon is tough enough without having to jostle your way from Hopkinton to Copley Square. So this year, race organizers turned to an expert in crowd science to help them manage the field of more than 32,000 as it travels the 26.2 miles (42.195 kilometers) through eight Massachusetts cities and towns. “There are certain things that we can’t change—that we don’t want to change—because they make the Boston Marathon,” said Marcel Altenburg, a senior lecturer of crowd science at Manchester Metropolitan University in Britain. “Like, I’m a scientist, but I can’t be too science-y about the race. It should stay what it is because that’s what I love. That’s what the runners love.” The world’s oldest and most prestigious annual marathon, the Boston race, was inspired by the endurance test that made its debut at the inaugural modern Olympics in 1896—itself a tribute to the route covered by the messenger Pheidippides, who ran to Athens with news of the Greek victory over the Persians in Marathon. After sharing the news— “Rejoice, we conquer!”—Pheidippides dropped dead. Organizers of the Boston race would prefer a more pleasant experience for their runners, even as the field has ballooned from 15 in 1897 to as many as 38,000 to meet demand for the 100th edition in 1996. It has settled at around 30,000 since 2015. As the race grew, it tested the limits of the narrow New England roads and the host cities and towns, which are eager to reopen their streets for regular commutes and commerce as quickly as possible. “It would be kind of great someday to be able to grow the race a little bit more,” race director Dave McGillivray said. “The problem with this race is that it’s about two things: time and space. We don’t have either. … So, we’re trying to be innovative.” This article was provided by The Associated Press.