A Brief History of Fat Bikes

February 15, 2018 - Nicholas Carman blogs for Adventure Cycling from time to time and here's a great one from a few years back.

Fat bikes receive much attention for good reason. They’ve ridden the length of continents, across the snowy state of Alaska in winter, and along unique sections of coastline all around the globe. In the last few months, several fat tire vehicles have even appeared at the South Pole by means of human power, one of which was actually a tricycle! While fat bikes are capable of extreme all-terrain conquest, they also entice riders with their go-anywhere capacities on a more local scale. Midwestern urban explorers fight midweek blues by riding the river banks of the Mississippi, gunning out of town on weekends to ride and race groomed snowmobile trails. Fat bikes make light work of Coloradan jeep tracks, rocky Pennsylvanian singletrack, and Arizonan arroyos. In places like Anchorage, Alaska, where I am living for the winter, fat bikes play a central role in four-season commuting and recreation. Ten years ago, almost none of this existed.

The development of the conventional mountain bike is essential to the genesis of the modern fat bike. In the 1970s and 80s, groups of ingenious riders in California and Colorado modified singlespeed balloon-tire cruisers with a wide range of gears, powerful cantilever brakes, and durable lightweight components. Like never before, early all-terrain bikes were able to explore new routes, both up and down the mountain. Mass manufacturing and broad distribution helped the mountain bike explode on the market in the early 1980s, and by 1986, mountain bikes outsold road-racing and road-touring bikes. Adventurous riders explored deep into the backcountry, scouting new roads and trails, while others took to the streets and discovered that wide tires and an upright position make a comfortable urban commuter or cross-country tourer. Most importantly, mountain bikes enlivened cyclists with a new lens. With the ability to ride so many more places, the once finite resource of smooth pavement was replaced by an infinite universe of back roads, logging tracks, mining roads, and hiking trails. But limitations remained, especially on rocky terrain, soft surfaces, and steep grades. Since the late 1980’s, mountain bikes have developed through suspension, lighter materials, and improved geometry, but most advancements have focused on the ability to conquer rough terrain at speed (i.e. mountain biking). Fat bikes attempt to solve the unique challenge of riding on a diverse range of surfaces, including sand, mud, and snow.

The history of the modern fat bikes includes two contemporaneous stories of development in Alaska and southern New Mexico. As mountain bikes arrived in shops in the 1980s, customizations for riding on sand and snow were quick to follow. In 1987, the first Iditabike event challenged riders to travel 200 miles of Alaskan backcountry in winter, following snowmobile and dog mushing trails. The course followed the first section of the historic Iditarod dog mushing trail to Nome, another 1000 miles further. Conditions along the trail range from rideable frozen crust — the result of daily freeze-thaw cycles — to a mélange of soft snow, glare ice, and liquid water overflow. Harsh conditions, and lots of walking alongside a bike in the snow challenged riders to improve their equipment for next year. A wider tire footprint was essential.

Individual rims were pinned or welded side by side, laced in tandem to a single hub, with two tires. With twice the footprint, the wider system allowed more riding and less walking. One notable experiment, called the “six pack,” even used three rims and tires side by side on both the front and the rear of a custom frame.

The tandem rim concept was improved by removing the two inner rim walls, to accept a single large-volume tire, which could operate at low pressure, and was lighter. Simon Rakower of Fairbanks, Alaska, modified rims in this manner for customers before entering production of the 44mm wide Snowcat rim. These wide, lightweight rims allowed the largest possible footprint, and fit within most conventional mountain bike frames. Most importantly, these rims were available off-the-shelf. They were standard equipment on winter bikes in Alaska for many years.

At about the same time, Ray Molina was exploring new terrain in southern New Mexico, and across the border into Mexico. Riding sand dunes and arroyos, Ray began manufacturing an 82mm wide rim in Mexico, along with a 3.5” tire to match, called the Chevron. He made several frames to accommodate the new equipment and testing took place at the Samalayuca sand dunes in Chihuahua, Mexico. At the Interbike trade show in late 1999, Alaskan Mark Groneweld made plans to bring Remolino rims to Alaska. Paired with his custom Wildfire Designs frame and a 3.0”-3.5” tire like the Nokian Gazzaloddi or the elusive Specialized Big Hit (both borrowed from downhill bikes), the first modern fat bikes were born. John Evingson, of Anchorage, Alaska, also built and raced highly refined custom bikes to fit Remolino rims and 3.0” tires.

Long-distance winter riding and racing continued through the 1990’s in Alaska, and in 2000, Mike Curiak of Colorado won the first official Iditasport Impossible race to Nome, riding and pushing his bike over 1000 miles in just over 15 days. Mike’s accomplishment may be the greatest proof of concept for fat bikes, ever. He rode a custom Willits frame made by Colorado builder Wes Williams, designed around Remolino rims and 3.0” tires. The bike is now on display at Absolute Bikes in Salida, Colorado, one of the best towns along the Great Divide Route. Until 2005, custom frames and hard-to-find rims and tires comprised the microscopic fat bike genre.

The Surly Pugsley changed the fat bike scene dramatically, providing the single greatest boost to availability and participation in the history of the fat bike. Released in an audacious purple color in 2005, along with the 65mm wide Large Marge rim and the 3.7” Endomorph tire, the modern fat bike era was born. The Pugsley was available to almost every bike shop in the country through Quality Bicycle Parts (QBP), a distributor with broad reach. The bike came as a bare frame and fork, and was intended to be completed with common mountain bike components, including standard 135mm hubs and a 100mm wide bottom bracket, also borrowed from downhill bikes. Following the release of the Pugsley, and subsequent sales growth, several other companies quickly joined the market. In 2007, pioneering a symmetrical aluminum frame with ultra-wide hubs (165mm, then 170mm, now 190mm) and rims (70mm and 90mm), the Fatback bike company of Anchorage, Alaska pushed fat bikes into the future, providing more flotation with less weight. In 2010, both Surly and Salsa released complete fat bikes through the QBP distribution chain, providing another huge leap in accessibility and sales. This year, over a dozen companies are offering complete bikes. Ten years ago, this would have been hard to imagine.

The future of fat bikes is bright as new bikes and adventures make headlines each year. From 22lb carbon bikes to rack-friendly steel touring models like the classic Pugsley, there is a fat bike for everyone.

Thanks to Billy Koitzsch for the collection of historical fat bike equipment.

NICHOLAS CARMAN left on a bike trip in 2008 and never stopped riding. You can find his stories, photographs, and ideas online at gypsybytrade.wordpress.com.

Photos by Nicholas Carman


Don’t miss our 2018 Fat Bike Buyer’s Guide. Wondering about tire sizes, rim sizes, frame materials, accessories, brakes, or even whether suspension on fat bikes might be a good idea? Phew. Let Nick Legan and Alex Strickland break it down for you.

And ... Share, share, share! Share your own fat bike stories, tips, and photos with us on Facebook, Instagram, Twitter by tagging #fatbikefeb and #adventurecycling.


Nico Notelli November 30, 2018, 8:44 PM

Thoroughly enjoyable reading about the early fat bike incarnations, and the races that inspired them. Can imagine the burn those guys must have felt with those distances!!

Richard Donald Goodwin November 5, 2018, 12:31 PM

This was a great article really enjoyed it. Loved the pic of the early bikes. As a fatbike owner I was hooked as soon as I laid eyes on the bike.

Ginnis January 8, 2019, 5:37 PM

me too!

Brandon Tyler April 4, 2018, 2:45 AM

Excellent put up, very informative historical article. A very good read indeed. Thanks for sharing!

Erica Koitzsch March 1, 2018, 9:07 PM


The "collection of fat bike equipment" is Billy Koitzsch's not Greg Matyas'--Billy just thought people would be interested in his vast personal collection & so he created a rotational display of his "Evolution of the Fat Bike". His collection was displayed at local bike shops that year. Billy Koitzsch is the race director of the original human-powered ultramarathon: IditasportAlaska.com and is an established winter adventurer. He is in the photo with Roger Cowles in 1997 during the inaugural year of the Iditasport Extreme.


Gary November 29, 2017, 7:07 PM

Excellent Read!

BeerBiker August 31, 2015, 3:44 AM

I would so love to have a Remolino to go with the 9zero7 & two Salsas in the family...

Bruce Mathieson February 27, 2015, 12:16 AM

A great article!, The Pugsley re opened my eyes to offroad cycling and pushing the boundaries of where a bicycle can be ridden, you can have a micro adventure right on your doorstep!,

7 years on i still love riding my Pugsleys on the coast here in Scotland!

John bercic February 24, 2015, 12:00 AM

Very good write up ! We have the first and still only fat cruiser bike here in the Philippines. www.phatkatbikes.com

Pierre Ostor November 13, 2014, 5:17 AM


A Frenchmen built a two wheels fatbike in 1980 to cross the Sahara, then built a three wheels fatbike in 1986.

Nicholas Carman January 27, 2015, 1:10 AM

Pierre, Thanks for the link. I'd forgotten about that bicycle. I am now wondering if Roger Cowles built his famous "six-pack" before or after 1986.

Mike Howarth October 22, 2014, 3:06 PM

Great piece of historical writing.

The future of fat bikes shines bright, I think it is going to be an interesting couple of years coming up.

To my mind the Pugs is still the de facto fat bike. Throughly enjoying riding mine on South American dirt roads right now!

Nicholas Carman January 23, 2015, 1:48 PM

Mike, Great to hear from you from South America. I think the Pugs is still one of the best choices for the kind of end-of-the earth riding you are after, yet it won't disappoint on local trails with friends. However, my current preference is for something more like the Salsa Mukluk, especially when there is some technical trail involved.

Steve Jurmu August 28, 2014, 4:03 PM

Nice article, I am just getting into fat biking myself. It is something we up here in the Upper Peninsula of Michigan are just starting to do. There is plenty of snow and ice for 5-9months of the year for us to use them. We have world class snowmobiling and mountain bike trails that they can be used on all 4 seasons. Marquette has around 300 people who ride fat bikes, and the city of Houghton where we are at has around 20 and growing. I hope I can help people get into the fat bike scene.

Come visit us in the U.P. ( http://facebook.com/funintheUP )and check out what we have to offer up here. Copper Harbor Trails are IMBA EPIC RIDES. https://www.imba.com/epics/copper-harbor-trails

Nicholas Carman January 23, 2015, 1:45 PM

Steve, Thanks for the invite. I've passed through the UP once, summer several years ago. I loved visiting Marquette and Houghton, and made some brief excursions on sandy ATV trails which are probably best tackled by fatbike, even in summer. I've heard about the world-class winter trails in Marquette. If you ever get the chance, a week or two in the Anchorage area could be well spent on a fatbike, especially in March. There are thousands of riders in the city, and many miles of singletrack, beach, and groomed trails.

Slo Joe February 18, 2014, 11:26 AM

I'd like to reprint this article in Bikes Around Bend. Please email me at joesuekeenan AT gmail DOT com with how to give credit, etc.

Ray Molina February 17, 2014, 12:40 PM

Actually, Mike Curiak's bike record to Nome was done on the 82mm rim and the Tornel 3.5 tire made for the Remolino Sand Bike. Curiak removed most all of the tread from the tire to save on rotational weight. Stamstad left his sponsored rims and tires in his garage for the race to Nome.

Nicholas Carman February 18, 2014, 3:01 AM


The "Tornel" is the tire with the chevron pattern, like the Endomorph, or another pattern that I have not yet seen? Nonetheless, Mike Curiak's passage to Nome in that year is amazing, especially in light of more recent advancements in equipment.

Your rims have done more to inform the modern concept of fatbikes that anything else. Would you be willing to share more details with me? I am hoping to compile a more exact history of fatbikes for publication.

Remember, we met at Keith's place in Urique in spring 2010? You can contact me at nicholas.carman@gmail.com.



Andy Frye February 15, 2014, 3:09 PM

Another small piece of the spread... It was told to me that John Evingson had moved to Minnesota taking his custom fat bike with him and introduced the guys at Surly to the idea starting Surly's interest in the market. Evingson is back in Alaska now

Nicholas Carman February 18, 2014, 3:07 AM

Andy, Interesting. I've never heard of this, but it seems there may be a major connection missing from my history. Surly guys are nearly clairvoyant, nearly. But I've always wondered about how they "solved" the challenges of fatbike design. A connection to John Evingson might be the key. Please email me with more info at: nicholas.carman@gmail.com. I would appreciate your expertise. Thanks!


Dave Grandmaison January 28, 2016, 12:58 PM

Check out the fat-bike.com interview with Dave Gray: https://fat-bike.com/2015/05/interview-with-dave-gray-from-surly-bikes/

Jeff February 14, 2014, 6:52 PM

Considering how many riders react to seeing fat bikes now, I can only imagine what it was like in 1999 at a trade show. That was a really cool write up. Thanks for spending the time to put it all together.

geoff harper February 14, 2014, 6:32 PM

Great article!

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