Tonight, I started looking at alternative routes for the Antelope Peak Challenge that would decrease the amount of road on the route. From Biosphere II, it looks like we can take some 4wd trails to the south side of Oracle. While looking at aerial views, the idea of jumping onto the control road and the AZ Trail to Tiger Mine Road began to unfold. It would add less road and a lot more mileage (approx 90ish miles).
Here is a topo view of the 4wd trail near Biosphere II (purple line is current route on highway).
Any thoughts about adding more miles? Or how about a 60-mile and 100-mile option?