The 14-mile race course starts and finishes at North Court and Piñon streets in Buena Vista. The triple crown series began last weekend in Fairplay, with Bob Sweeney and Yukon edging out Marvin Sandoval and Buttercup, said Lindsey Lighthizer. Lighthizer said her burro had a tough day. Burro Mary Margaret was half of the winning team in the long course race in Fairplay for three straight years from 2016-18. âMary had some kind of bruise or something in her hoof and I had to pull her,â she said. âWe were doing great for the first 10 miles, but then she just quit on me and I realized she wasnât even putting her foot on the ground.â