Ethiopian runners Tilahun Regassa and Mamito Daska respectively won the men's and women's professional races at the Bolder Boulder during a drizzly and cool Memorial Day that allowed runners to set a quick pace. Regassa finished in 28 minutes, 17 seconds and Daska in 32 minutes, 48 seconds, reports Boulder's Daily Camera. Simon Cheprot, of Kenya, finished the 10K citizens' race in 29 minutes, 19 seconds, beating the 30-minute, 22-second record. And Freya Murray, of Scotland, captured the women's citizens' race in 34 minutes, 23 seconds. For more results, click here.