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(Francisco Kjolseth | The Salt Lake Tribune) A fat biker pedals among the scrub oak on the single track trails of Round Va... (Francisco Kjolseth | The Salt Lake Tribune) Packed grippy conditions make for good fat biking as people pedal the trails ... (Francisco Kjolseth | The Salt Lake Tribune) Rachel Gerson of Seattle, WA, skate skis the groomed trails of Round Valley i... (Francisco Kjolseth | The Salt Lake Tribune) Jayde Davis of Salt Lake hits the trails of Round Valley in Park City pedalin... (Francisco Kjolseth | The Salt Lake Tribune) A skate skier glides along the groomed trails of Mountain Dell golf course in... (Francisco Kjolseth | The Salt Lake Tribune) A pair of fat bikers pedal among the scrub oak and sage in Round Valley near ... (Francisco Kjolseth | The Salt Lake Tribune) Bam Davis of Salt Lake City joins his brother to pedal the groomed trails in ... (Francisco Kjolseth | The Salt Lake Tribune) Sledders take to the hill at Mountain Dell golf course in Parleys Canyon on T... (Francisco Kjolseth | The Salt Lake Tribune) Skate skiers and their four legged friends take advantage of good ski conditi...