I don't normally do treadmill running, but this might be a good idea to add variance to my cardio. Do this for 20 minutes, plus lift weights, and perhaps a few miles on the bike, and I'd be pretty pleased!
A 20-Minute Treadmill Workout For Intermediate To Advanced Runners
This advanced treadmill routine relies on increasingly steep hills to get your heart pumping and your legs burning.
Summit Medical Group - Shoulder Bursitis Exercises