Littleton Twilight Criterium 2015 Comments Latest News from the Race Unitedhealthcare doubles in Littleton Alzate wins men's race, Barnes leads UHC sweep in women's Races Littleton Twilight Criterium 2015 1 August 2015 | Littleton, CO | NE Littleton Criterium - Unitedhealthcare doubles in Littleton 2015-08-01