“Quieres pasar? I asked the man behind me as we were grinding up 900 meters on the steep and rocky “dragon’s tail” at kilometer 54 of the Ultra Coah 160. “No, todo bien,” he replied, then proceeded to dry heave behind me. I’d been on this part of the course with my nuevos amigos, but we’d run down it. I can tell you that both ways are diabolical.