Fatbike

Fatbike being ridden over the snow
Picture from series "Strange but True!", placed by Currys Ltd in the cycling press, before 1932
Sun Spider AT fat tire bicycle on display at the Carnegie Science Center in Pittsburgh, Pennsylvania, United States
Fatbike in Mexico
Full Suspension fat-tire bike
Bikepacking in the U.S. state of Oregon

Off-road bicycle with oversized tires, typically 3.8 in or larger and rims 2.16 in or wider, designed for low ground pressure to allow riding on soft, unstable terrain, such as snow, sand, bogs and mud.

- Fatbike
Fatbike being ridden over the snow

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Modern long-wheelbase cargo bike from Amsterdam

Cargo bike

Human powered vehicle designed and constructed specifically for transporting loads.

Human powered vehicle designed and constructed specifically for transporting loads.

Modern long-wheelbase cargo bike from Amsterdam
A modern cargo trike in use in London, featuring electric assist
Mother with two children in The Hague (Netherlands)
Cargo bike in Copenhagen
Typical 1930's Butcher's Bike, in the Forest of Dean
Danish Long John cargo bike, 3-speed hub
Offroad Long John bicycle, 80x60 cm cargo area, twin motors
A Surly Big Dummy with handlebars and foot rests for a second rider
Xtracycle Free Radical as fitted to a Trek 820 MTB donor bike.
Chukudu transporting bananas to market in the North Kivu province of DR Congo.
A modern bicycle styled after the classic French Porteur bicycle
Cycle rickshaw in Dhaka
Traditional Dutch cargo tricycle or "bakfiets"
An old cargo bike in Tel Aviv, Israel
A loaded cargo trike being pushed in Jakarta, Indonesia
Cyclists in Portland, Oregon, move a household by bike
Heavy-duty city bike with frame-mounted front carrier known as a "semi-transportfiets" (Dutch for semi-transport bicycle)
Classic Monark Swedish baker's bike, this one with locking aluminium case on the frame-mounted front carrier
Traditional Delibike in Buenos Aires.
Somewhat heavier bike, steered by linkage. Amsterdam, Netherlands.
Cargo trike specially equipped for street cleaning crews; The side and rear compartments carry pick-up sticks, bag holders and other gear.
Child transport is now the most popular use of cargo bikes{{citation needed|date=November 2015}}, and numerous special models are offered.
Brazilian cargo bikes are very strong and commonly carry large propane containers, 5x20-gallon water jugs, etc.
Heavy duty cargo trike in Sweden
An Iceni Cycles Chariot trike with aluminium box for local delivery work.
A Bike43 longtail ebike carrying two children
Vietnamese cargo bikes, used to move freight across the Hekou-Lào Cai border crossing
Stroller Bike - Stroller Configuration
Stroller Bike in Bike Configuration

Such designs can cover difficult terrain such as sand, mud, and snow, by using fatbike tires, electric motors, and suitable ground clearance.

Surly Bikes

Bicycle brand based in Bloomington, Minnesota, United States, that was founded in 1998.

Bicycle brand based in Bloomington, Minnesota, United States, that was founded in 1998.

A Big Dummy, a model of bicycle manufactured by Surly, in 2010

Soon after its founding in the late 1990s, the Surly brand was mostly known for in the bicycle industry for its single-speed bikes, but in the 2010s it became known for fat-tire bikes that it helped pioneer with machinery it owned.

A clincher bicycle tire mounted on a wheel

Bicycle tire

Tire that fits on the wheel of a bicycle or similar vehicle.

Tire that fits on the wheel of a bicycle or similar vehicle.

A clincher bicycle tire mounted on a wheel
A cross section of a clincher tire with a puncture-preventing layer (in blue) between the casing and the tread
An inner tube rolled up for storage or to be carried as a spare
New Mail Ladies Safety bicycle, circa 1891, with solid rubber tires
A tubed, clincher tire showing the inner tube protruding between the tire and the rim
Tubular tire rolled from rim to show glue between them
Clincher cross section schematic with 1: rim, 2: rim strip, 3: rim braking surface, 4: bead core, 5: inner tube, 6: casing, 7: tread
A bicycle inner tube with valve stem
Mobike airless tire
A foldable mountain and road bicycle tire
A punctured tire.
A studded, knobby tire
Tire-size designations on the side of a tire
62x 203 Michelin balloon tire on front wheel of 1960s Bootie Folding Cycle

Since the 1980s, fat tires of width 3.8 to 5 in, and diameters similar to conventional bicycle wheels, have been used on "fatbikes" and all-terrain bikes designed for riding in snow and sand.

Satellite photo of the McMurdo Station with the South Pole Traverse (central road)

South Pole Traverse

Approximately 995 mi flagged route over compacted snow and ice in Antarctica that links McMurdo Station on the coast to the Amundsen–Scott South Pole Station, both operated by the National Science Foundation of the United States.

Approximately 995 mi flagged route over compacted snow and ice in Antarctica that links McMurdo Station on the coast to the Amundsen–Scott South Pole Station, both operated by the National Science Foundation of the United States.

Satellite photo of the McMurdo Station with the South Pole Traverse (central road)
Cargo caravan on the ice highway in early 2006
Topographic Map Sheet Leverett Glacier 1:250,000

In February 2013, Maria Leijerstam pedaled a three-wheeled recumbent fatbike over a portion of the South Pole Traverse route, for which she was recognized by Guinness World Records as the first person to arrive at the South Pole by tricycle.

Burton at completion of first bike ride from coast of Antarctica to the South Pole

Daniel Burton

American bicycle enthusiast from Eagle Mountain, Utah, and the first person to complete an expedition from the coast of Antarctica to the South Pole by bicycle (though not the first to cycle to it).

American bicycle enthusiast from Eagle Mountain, Utah, and the first person to complete an expedition from the coast of Antarctica to the South Pole by bicycle (though not the first to cycle to it).

Burton at completion of first bike ride from coast of Antarctica to the South Pole

Burton began riding fatbikes, which are fortified bikes with wide tires that are intended for sand, ice and snow.

The sign at the summit of Rollins Pass displays four proposed rail tunnel routes through the Continental Divide as alternatives to summiting Rollins Pass; it was the longer Moffat Tunnel that achieved this feat of engineering and was first utilized in February 1928.

Rollins Pass

Mountain pass and active archaeological site in the Southern Rocky Mountains of north-central Colorado in the United States.

Mountain pass and active archaeological site in the Southern Rocky Mountains of north-central Colorado in the United States.

The sign at the summit of Rollins Pass displays four proposed rail tunnel routes through the Continental Divide as alternatives to summiting Rollins Pass; it was the longer Moffat Tunnel that achieved this feat of engineering and was first utilized in February 1928.
A low rock wall and attached hunting blind (pit) at the Olson Game Drive on Rollins Pass. These features were hand-made by Native Americans; radiocarbon and lichenometric dating suggest occupation by Native Americans spanning the last 3,200 years, with diagnostic tools suggesting even older use of the site to more than 10,000 years ago.
Original log cribbing on Rollins Pass, laid by John Q.A. Rollins, to aid with the passage of wagons in this area along Guinn Mountain. This view is looking due east; out of frame and directly below at right, is Yankee Doodle Lake.
"Snow cuts on Rollin's [sic] Pass, Moffat Road, Colo." This is a colorized sketch of McClure photograph 257-8067, the description stating, "Snow scene, summit Rollin's Pass: elevation, 11,660 feet; on Moffat Line R. R., three hours' ride from Denver. Photograph taken in May, 1906. The region of perpetual snow. Photograph by L.C. McClure, Denver."
The winding inefficiency of the outdoor Rollins Pass rail route is brought into sharp contrast when compared with the direct, weather-agnostic Moffat Tunnel route. The Moffat Tunnel eliminated 10,800 degrees of curvature along the Rollins Pass route.
Illegal off-roading of a vehicle on Rollins Pass near Mount Epworth and Deadman's Lake. The alpine tundra is extremely fragile and can take 100–500 years to fully recover.
This annotated view shows the damage to the alpine tundra caused by illegal offroading on Rollins Pass. The vehicle is outlined in blue, the tire tracks in red, and the designated road in yellow.
Summer thunderstorms form very quickly; above timberline, exposure to electrical storms can be dangerous or deadly. This weather system was photographed on Sunday, July 8, 2018 on the west side of the Rollins Pass road, roughly halfway between the trailhead for Pumphouse Lake and the summit.
A small, solar-powered weather station is surrounded by native growth on the west side of Rollins Pass, located above Ptarmigan Point.
A vehicle has not followed the published Motor Vehicle Use Maps (MVUMs) and has parked inside of the Indian Peaks Wilderness area, where motorized vehicles are prohibited. Fines can be as much as $5,000.
Typical summer condition of the road on Rollins Pass. This photograph was taken facing southwest on the road near the Riflesight Notch trestle on the west side of Rollins Pass.
2018 photograph of Needle's Eye Tunnel, near the summit of Rollins Pass. This view shows the northeast portal in the foreground; the southwest portal can be seen in the background. Wire mesh and metal dowels were installed in August 1987 to help reduce additional rock falls and preserve the condition of the tunnel constructed in 1903.
An aerial view of the emergency backcountry helicopter landing zone located at the summit of Rollins Pass; the white prong of the landing zone, furthest from the camera, points north. The comparatively low saddle of Rollins Pass is visible in this image as the summit itself (in the foreground and midground) is plainly lower in elevation than the surrounding mountains. The wood debris consists of both remnants from snowsheds that covered the tracks as well as discarded railroad ties that were removed from service in the summer of 1936.

The complete pass is open and accessible for snowshoeing, fatbiking, backcountry skiing, and cross-country skiing in the winter and to hikers, bicyclists (including those on tandems and unicyclists ), and horseback riders in the summer.

1886 Swift Safety Bicycle

History of the bicycle

Vehicles that have two wheels and require balancing by the rider date back to the early 19th century.

Vehicles that have two wheels and require balancing by the rider date back to the early 19th century.

1886 Swift Safety Bicycle
Wooden draisine (around 1820), the earliest two-wheeler
Drais's 1817 design made to measure
Denis Johnson's son riding a velocipede, Lithograph 1819.
A couple seated on an 1886 Coventry Rotary Quadracycle for two.
McCall's first (top) and improved velocipede of 1869 – later predated to 1839 and attributed to MacMillan
The original pedal-bicycle, with the serpentine frame, from Pierre Lallement's US Patent No. 59,915 drawing, 1866
New York company Pickering and Davis invented this pedal-bicycle for ladies in 1869.
A penny-farthing or ordinary bicycle photographed in the Škoda museum in the Czech Republic
Starley's "Royal Salvo" tricycle, as owned by Queen Victoria
An 1884 McCammon safety bicycle
An 1885 Whippet safety bicycle
An 1889 Lady's safety bicycle
a ca. 1887 color print
Bicycle in Plymouth, England at the start of the 20th century
1897
German Wehrmacht Radfahrtruppe bicycle troops
This racing bicycle has aluminum tubing, carbon fiber stays and forks, a drop handlebar, and narrow tires and wheels.
The 2005 Giant Innova is an example of a typical 700C hybrid bicycle. It has 27 speeds, front fork and seat suspension, an adjustable stem and disc brakes for wet-weather riding.
2008 Nazca Fuego short wheelbase recumbent with 20" front wheel and 26" rear wheel.

Fatbike was invented for off-road usage in 1980.

Kardzali Reservoir in Bulgaria is a reservoir in the Rhodope Mountains.

Lake Koshkonong

Naturally occurring lake that acts as a reservoir in southern Wisconsin.

Naturally occurring lake that acts as a reservoir in southern Wisconsin.

Kardzali Reservoir in Bulgaria is a reservoir in the Rhodope Mountains.

Other winter activities practiced on and around the lake include snowmobiling, fatbike riding, and ice skating.

Stadium in Olympia, Greece

Badger State Games

The Badger State Games are a series of annual Olympic-style multi-sport events for amateur athletes from the state of Wisconsin, held twice per year in Wausau.

The Badger State Games are a series of annual Olympic-style multi-sport events for amateur athletes from the state of Wisconsin, held twice per year in Wausau.

Stadium in Olympia, Greece

Fat-tire bike racing

Bicycles can be categorized by function, number of riders, gearing, sport, means of propulsion, position of the rider or as here the frame type: This is a type intended for use by women, with a lowered top tube due to consideration for skirts.

List of bicycle types

Overview of different types of bicycles, categorized by function ; number of riders (one, two, or more); by construction or frame type (upright, folding, etc.); by gearing (single speed, derailleur gears, etc.); by sport (mountain biking, BMX, triathlon, etc.); by means of propulsion (human-powered, motor-assisted, etc.); and by rider position (upright, recumbent, etc.) The list also includes miscellaneous types such as pedicabs, rickshaws, and clown bikes.

Overview of different types of bicycles, categorized by function ; number of riders (one, two, or more); by construction or frame type (upright, folding, etc.); by gearing (single speed, derailleur gears, etc.); by sport (mountain biking, BMX, triathlon, etc.); by means of propulsion (human-powered, motor-assisted, etc.); and by rider position (upright, recumbent, etc.) The list also includes miscellaneous types such as pedicabs, rickshaws, and clown bikes.

Bicycles can be categorized by function, number of riders, gearing, sport, means of propulsion, position of the rider or as here the frame type: This is a type intended for use by women, with a lowered top tube due to consideration for skirts.
A modern touring bicycle, with accessories and baggage
An aluminum BXR bike made by Caloi and built using Shimano Acera and 27 Speed and a wheelset with 36 spoke count.
Bicycles parked outside an academic building at Stanford University
Firefighter bicycle
Typical 1930s Butcher's Bike
An aluminum racing bicycle made by Raleigh and built using Shimano components. It uses a semi-aerodynamic wheelset with low spoke count.
Flatland rider on a BMX bike
Strida folding frame bicycle in yellow
ElliptiGO users stand up on a seatless treadle bicycle
Two people riding a Sociable
A treadle bicycle from 1925
Shimano XT rear derailleur on a mountain bike
The 2005 Giant Innova is an example of a hybrid bicycle. It has 27 speeds and disc brakes for wet-weather riding.

Fatbikes are mountain bikes with very wide, ~3.7 in, tires designed for riding on soft surfaces such as snow and sand.