X Games officials expressed their condolences and said Moore, a four-time X Games medalist, would be remembered "for his natural passion for life and his deep love for his family and friends."
The Twitter accounts of many athletes from a wide range of sports expressed their sympathy Thursday:
— New York Jets quarterback Tim Tebow: "So sad to hear about the passing of snowmobiler Caleb Moore. My prayers go out to his younger brother Colten & their entire family."
— Freestyle skier Kaya Turski: "The spirit of Caleb Moore will be floating among us forever. RIP."
— Surfer Kelly Slater: "Tragic. Don't even know what to say."
— Snowboarder Gretchen Bleiler: "Our world has lost another bright light. Sending my deepest condolences to the family and friends of Caleb Moore."
— Tampa Bay third baseman Evan Longoria, who made a visit to Winter X last weekend: "Tragic day for the family of Caleb Moore. Our deepest sympathies go out to all who he influenced and touched. RIP."
— Motorsports standout Travis Pastrana: "So sad to hear about Caleb Moore. My condolences and prayers go out to his family and friends."
— NASCAR driver Austin Dillon: "Just heard about Caleb Moore. I don't know what to say other than I'm praying for his family and friends. He was a true Action Sports Hero."
B.C. Vaught, Caleb Moore's agent for almost a decade, said he first saw Moore when he was racing an ATV in Minnesota and signed him up to star in some action sports movies.
Later, Moore wanted to make the switch from ATVs to snowmobiles and Vaught helped him. A natural talent, it only took Moore two weeks to master a difficult backflip.
Moore honed his skills in Krum, a town about 5,000 people 50 miles northwest of Dallas that rarely sees snow. Instead, he worked on tricks by launching his sled into a foam pit. After a brief training run on snow ramps in Michigan, he was ready for his sport's biggest stage — the 2010 Winter X Games.