A trail (also track, byway) is a path with a rough beaten or dirt/stone surface used for travel. Trails may be for use only by walkers and in some places are the main access route to remote settlements. Some trails can also be used for hiking, cycling, or cross-country skiing and less often for moving cattle herds and other livestock.

Trail often denotes a hiking trail. Historically the term was used for a route into or through wild territory used by emigrants (e.g. the Oregon Trail). In the early years of the 20th century the term auto trail was used for a marked highway route, and trail is now also used to designate routes, including highway routes, designated for tourist interest (e.g. National Historic Trails, the Cabot Trail and Quilt Trail). The term trail has also been used by developers and urban planners for a variety of modern paved roads, highways, and boulevards. A particularly unusual use of the term is in the province of Alberta, Canada, which has multi-lane freeways called "trails".

Aaron Holmes Gwin is an American professional downhill mountain biker from Morongo Valley, California. He is recently known for breaking on to the international World Cup scene after about 8 months of riding downhill. Many see Gwin as the savior for US downhilling on the international scene since his 10th place finish at the Mont Sainte-Anne World Cup in 2008 was the first American top 10 finish since 2004.

Aaron Gwin started his cycling career off early racing BMX from age 4. By age 8 Gwin was racing all the nationals. At age 12 Gwin moved on to motocross and raced up until he was 17 when he quit due to constant injuries. In 2008 at age 20 Gwin was loaned a bike by fellow professional downhill racer and good friend Cody Warren and was encouraged to compete in a race. In his first race in the Fontana Winter Series he got 3rd and began racing from then on, quickly signing with Yeti Cycles. He has since won two United States National Championships for Downhill, in 2009 and in 2010. Both were held in SolVista, Colorado