From the registration website description:
The combination of the Bike Snowmass lift accessed terrain and the surrounding Town of Snowmass Village trails offer some of the most diverse mountain biking in the country. Bike Snowmass is the only lift served biking in the U.S. that can take riders on a 4,000-foot single track decent, beginning above tree line and ending in the high mountain desert. Snowmass has everything from Gravity Logic jump trails, World Cup level Downhill courses, to pristine, buff single track. Riders should expect to see 5-6 stages with both lift served and back country access to the starts. Snowmass has supported mountain biking and gravity riding for over 15 years going back to the NORBA Nationals and World Cup level Downhill racing. Throughout all the years, Snowmass has remained progressive every step of the way and is now excited to show off the bike park and trails to the new and exciting world of Big Mountain Enduro, which will be the first stop of the BME series and second stop of the North American Enduro Tour (NAET).