Mountain bikes are typically ridden on mountain trails, fire roads, logging roads, and other unpaved trails. These types of terrain commonly include rocks, washouts, ruts, loose sand, loose gravel, roots, and steep slopes. Mountain bikes are built to handle this terrain and the obstacles that are found in it, like logs, vertical drop offs, and small boulders. Mountain bikes, therefore, are more sturdily constructed than regular bicycles, have larger knobby tires, more powerful brakes, and the lower gear ratios needed for steep grades with poor traction. Trail riding on a mountain bike can be: • On steep, highly technical, constructed trails. • On longer trails, like bridle paths, rail trails, farm and forest roads and
towpaths. The
South Downs Way in England and the
Ohio to Erie Trail, in the USA would be examples. • On hiking trails that can include steep mountain trails and high passes. These rides can last for days. Off-road bicycle trails are generally function-specific and most commonly waymarked along their route. They may take the form of single routes or form part of larger complexes, known as trail centres. Off-road trails often incorporate a mix of challenging terrain,
singletrack, smooth fireroads, and even paved paths. Trails with an easy or moderate technical complexity are generally deemed
cross-country trails, while trails difficult even to experienced riders are more often dubbed
all-mountain,
freeride, or
downhill. Downhilling is particularly popular at ski resorts such as
Mammoth Mountain in
California, USA or
Whistler Blackcomb in
British Columbia, Canada, where
ski lifts are used to get bikes and riders to the top of the mountain. Long rides on hiking and mountain paths have some resemblance to
cycle touring but the latter usually take place on
tarmac. However,
Mixed Terrain Cycle-Touring, nicknamed "rough riding" in Canada and the US and "rough stuff" in Europe, is a form of trail riding, because it involves cycling over a variety of surfaces and topography, on a single route, either using a mountain bike or
hybrid bike. A new style of travel called adventure cycle-touring or expedition touring involves exploring remote regions of the world on sturdy bicycles carrying lightweight gear. This type of trail riding is in fact a form of
backpacking. ,
California, USA
Mount Tamalpais,
California, USA, and the surrounding areas in
Marin County, California are recognized as the birthplace of
mountain biking. In the 1970s, mountain biking pioneers such as
Gary Fisher, Otis Guy,
Charlie Kelly and
Joe Breeze were active. The 2006 film
Klunkers chronicled their story, solidifying Mount Tamalpais' legendary status as a trail riding destination. There has been considerable controversy around trail access for mountain bikes, both in terms of
environmental impact and the safety of other trail users. As a result, bicycles are generally restricted from narrow, single-track trails, though bicycles are allowed on most fire roads. However, mountain bikers in the United States generally have access to multi-use trails. down from
the Ridgeway to
Bishopstone, Salisbury,
Wiltshire, England. In England and Wales,
bridle paths and some other
rights of way, such as
byways and 'Roads used as paths' (RUPP), are open to cyclists, but
footpaths are not.