Higher pollution levels linked to slower marathon times across six World Marathon Majors
A study of more than 2.7 million marathon performances found that higher levels of air pollution on race day were associated with significantly slower finishing times, with recreational runners affected more than elite athletes.
<p>A study of more than 2.7 million marathon performances found that higher levels of air pollution on race day were associated with significantly slower finishing times, with recreational runners affected more than elite athletes.</p>