From the Elden trailhead lot head out on any of the trail spurs and start cranking it up! There are literally dozens of trails connecting through the sagebrush that you can connect into as many different loops as you feel like. This is also the starting point for the Heart Attack Trail if you really feel like testing your anaerobic hear rate!
How to get there:
From Flagstaff head out east on Route 66 then veer north on 89A towards Page. Just past the Ranger Station there will be a parking lot on the left side of the road. Enjoy!