Urban Mountain Bike Racing In the Streets of Valparaíso

► WATCH mountain biker Stevie Smith rip down a volcano: Urban downhill racing has shifted from being a slightly awkward but spectacular sideshow to a mainstay of many pro riders’ off-seasons. Dirt tracks are left behind for rich urban landscapes where mountain bikers charge through meaty stair-sets, backyard allies, and rooftop gaps with harsh landings that would leave most broken on the ground. Oh, and can’t forget to mention the stray dogs and touchy crowds that line the track. Po