Share This ArticleBy Chris Carmichael It’s good to be back at a relatively “moderate” elevation of 6,000 feet above sea level after spending the weekend in the even-thinner air up at 10,200-12,600 feet in and around Leadville, Colorado. I was in Leadville to race the Leadville 100 mountain bike race – “The Race Across the … Continue reading Understanding the Challenges of High-Altitude Racing at the Leadville 100 and USA Pro Cycling Challenge