Boulder Marathon LLC produces the two finest distance running events in the State of Colorado each year: The Rudi's Organic Boulder Marathon, Half Marathon & 5 Mile (taking place on 9/22/13) as well as the Rudi's Organic Boulder Spring Half Marathon, 10 Mile & 5 mile event on 4/7/13. Both events feature the finest sponsors, food, course support, prizes, awards, and race apparel.