Eldorado State park is known among climbing circles as a great location for climbing of all skill levels due to the large sandstone cliffs on either side of Eldorado Canyon. These cliffs vary in length with the longest one being 700 ft high! According to the Colorado Parks and Wildlife information removable gear replacement skills are mandatory.
There are some bolted sport routes in the canyon rated at 5.11d which is defined as the following according to this site:
5.11 a, b, c, d – This is the world of the dedicated climber. Expect steep and difficult routes that demand technical climbing and powerful moves.
If you are not able to find climbing routes difficult enough for your skills then you should try out for american ninja warrior. There are also many other routes for the skill levels in between. Climbers would also enjoy additional climbing on the flatirons just north of Eldorado Canyon on highway 93 in the town of Boulder, CO.
Warning! Rock climbing is a dangerous sport and substantial risk of injury exists. Rock climb at your own risk. Remember safety is your own responsibility! To find out more about climbing at Eldorado Canyon State Park go here.
A climbing route map can be found here.