This gives me the speed, then the hills. The 3-tiered climbing hill is a killer for a beginner like myself. Ruts and thick foliage make it a good challenge. They should get rid of the class-5 rock they put down. Climbing hills with that under you is like log rolling up hill.
Hills are just long enough to be lung burners.
Hills are just steep enough to make you glad you had a helmet. I imagine the short cut is not much of a work out. Being that I am writing this after my 2nd time out this year I can tell you that you will get a good lung workout on the hills. Thankfully you will be rewarded by going down some nice long hills. Not a bad place to get your self into shape.