The B loop will start the same as the A, with a lovely grind up Florence Kelvin Highway – to the very top of the world. From there you’ll take Tecolote Rd. and some dodgy singletrack over to the AZT. You will be momentarily sad that you missed the Boulders segment, but soon enough will be dropping down into Ripsey Wash and facing Switchback Hill. Once you reach the Ripsey ridgeline and marvel at how fricking big Asarco Ray Mine is, you’ll be heading toward that final epic downhill.