No matter how you slice it, you'll be in for quite a climb riding to the top of Star Pass as it tops out at over 12,000ft. However, the climb is worth it as you'll be treated with some of Crested Butte's finest alpine views and high alpine wildflowers. The other reward is the fact that the descent down into the East Brush Creek drainage goes on for miles.
This is usually ridden as an out and back or from the Cement Creek side as a loop. If riding from Cement Creek as a loop, ride up Cement Creek road several miles. Take a left on Trail 583. Stay on 583 until you come to the junction of 583 and 400 (Star Pass). From here you'll be treated with a ripping descent down into the East Brush Creek drainage. After descending 5 miles or so you'll come to the 545 (Block and Tackle) trail junction where you'll take a left. After a stiff climb up Block and Tackle, enjoy the downhill back to Cement Creek Road and your car.