Leadville 100 mile mountain bike race is six weeks away. This does not seem like a lot. This is going to be one of my most challenging races, if not the most challenging, because it has to be completed in 12 hours. This cut off is a reach for me, and I knew that right from the beginning. The race is at 11,000 – 13,000 feet above sea level, so it’ll be hard to get enough oxygen to my muscles and over the 100 ish miles, I’ll have to ascend about 10,000 feet (obviously lots of up and down!).