Zac Efron Goes Hiking for Christmas Shirtless!: Photo 1130009 Zac Efron Goes Hiking for Christmas… Shirtless! | 2017 Christmas Zac Efron Goes Hiking for Christmas Shirtless!: Photo 1130008 Guide to Hiking the Inca Trail, Machu Picchu, Peru | Just Zac Efron Goes Hiking for Christmas Shirtless!: Photo 1130007 Hiking in the Oak Savannah on Christmas Day. Picture of Quarry Zac Efron Goes Hiking for Christmas Shirtless!: Photo 1130010 Easy & Casual Christmas Day Outfit Inspiration | Rain outfit Zac Efron Goes Hiking for Christmas Shirtless!: Photo 1130011