9 News, Sports A record-breaking year at the 2024 Denver Colfax Marathon Sunday, May 19, 2024 NBC 9 News Nearly 25,000 runners took part in the two-day event, making it the biggest race in the city’s history.Link to original article Tags: newsEventsSportslifelocalhomecolorado-guidestylelocal-sportsentertainmentsponsored-by-9news