Ride whatever you want as long as it has no motor other than yours. There are only 5 rules:
1) Ride through the Firing Range parking lot;
2) Ride past the Altar (no bypassing the Altar with Crank);
3) Ride through Dry Canyon;
4) Start and finish at the same place; and most importantly...
5) Don't kill yourself smoking the pipe. Whether you walk it or ride it is your choice though.
Start and finish where you wish. Ascend/descend what you like. Prayers at the Altar are optional but encouraged.
Send me your overall time (not just your rolling time), route, and bike setup and I'll update the results.
All of the routes I can think of from Kris and Adam's map are marked in yellow:
Here is one route that starts and finishes at the Firing Range, goes up Betty to the Lower Belt Route, up Frank, up the Upper Belt Route, down Dry Canyon, BST back to the Firing Range:
Have fun, puke often, and don't forget rule #5.