The colorado adventure center is home to one of the longest and most exhilarating zip lines in colorado take in the amazing colorado rocky mountain scenery as you zip line through the tree tops at speed of up to 40 mph cruise tower to tower on 8 different zip lines there is over 5000 of zip lines allow the friendly and well trained guides to escort you through this one of a kind 3 hour colorado zip line adventure children 14 and under must be accompanied by an adult must be between 65 lbs