How old do the dog sleds have to be in the race?

Would a UK 9 need a wide snowboard? How much is 3cms of snow? What were Michelle kwans main accomplishments? Will freezing kill mildew? What is the taiga precipitation? How many Olympic gold metals has shaun whit won? What was the highest score possible in the old scoring system? What kind of styles do PUMA sneakers come in? What is better spyder jackets or north face jackets? What is esqui in Spanish? Is it possible to remount skis? A skier squats low and races down an 11 degree ski slope during a 2s interval the skier accelerates 1.2m per sec squared what is the horizontal component of the skier's acceleration? What is the runner on a sledge called? Why is baseball played in cold weather? How cold does it get? Who is known as the mother the iditarod and why? What is the plural form of warm up? What clothing item brings Frosty to life? A race that has no finish line? Name four countries that border russia on the west?