Immediately after first ever single track. We rode the East Fork Trail near Ophir, Colorado way too early in spring. We ran into snow-pack just before we made it to the highway after a long ride, I was exhausted and we had to turn around and do the whole thing again. Laid it over hard about 7 times, ducking under fallen trees, over others. I was sure that I was in over my head and that I was going to die. Best day of my life.