Held since 1979 in the running mecca of Boulder, Colo., the Bolder Boulder 10K is one of the largest road races in the world with more than 50,000 registered participants in most years. In the past 15 years or so, it’s become known for zany costumes, belly dancers, course-side parties, mid-race Slip-n-Slides and variety of unofficial snacks and beverages. (Bacon, beer, pancakes, donuts and tortilla chips were spotted this year.) But it’s also known for its wave starts and the International Team Challenge elite race. This year’s International Team Challenge was won by Eritrea’s Afewerki Berhane in 29:11.37, while the women’s race was won by Ethiopia’s Mamitu Daska (32:21.63). Shalane Flanagan (second, 33:05.11), Deena Kastor (fourth, 33:58.97) and Sara Hall (16th, 35:25.26) helped Team USA Red place third overall. On the men’s side, Sean Quigley of Team USA White was the top American (seventh, 30:04.67), but it was Ryan Hall (ninth, 30:12.97), Bobby Curtis (11th, 30:31.11) and Luke Puskesdra (12th, 30:31.83) of Team USA Red that managed to finish third in the team standings. In the citizen’s race, Scott Dahlberg was the top finisher in 30:50.00, while Sarah Crouch was the top female in 35:11.72. Joshua George won the men’s wheelchair race in 23:07, while Amanda McGrory won the women’s wheelchair race in 26:59.