Gravel vs. All Road: Choosing the Right Bike

It’s not just the dirt, it’s how you choose to ride it.

In a few short years, riding drop bars with big tires on surfaces other than asphalt has gone from a fringe cycling discipline to the main event. Whether you’re scrolling through race results, bikepacking blogs, or your Strava feed, gravel is what’s happening. This has brought a dizzying array of gravel bikes, all-road bikes, tire choices and options. For anyone considering a new bike it can be a lot to sort through. Let’s break it down. 

The Rise of Mixed-Surface Riding

Gravel roads aren’t new. They’ve always been there, quietly threading through national forests, farmlands, and forgotten backroads. What is new is the surge of bikes purpose-built to tackle them. Sure, you could ride dirt on 25mm tires with rim brakes—people still do—but modern gravel bikes make it a lot more fun. Think high-volume tubeless tires, disc brakes, wider gear ranges, and geometry tweaks that keep you comfortable for hours, even on routes that were mountain bikes only just a few years ago. 

And that brings us to all-road bikes.

While gravel bikes thrive when things get rough, allroad bikes are the bridge between fast road rides and light dirt adventures. They’re perfect for linking epic pavement stretches with a few smooth dirt trials. That’s all-road territory. It’s not about gnarly singletrack; it’s about versatility without sacrificing speed.

Defining the Mosaic Line

G-Series GT-1 45

Designed for events like Unbound Gravel and Mid South, the GT-1 45 is built for long days and rough routes. Think massive tire clearance up to 45c (even 48c on the integrated GT-1 i45), longer wheelbases, and geometry optimized for stability over chunky surfaces. It’s the bike you want when “gravel” means sharp flint, loose sand, or forgotten forest roads. It’s an exceedingly versatile, do-anything bike, but to fit those big tires it trades roadie handling and responsiveness for the comfort, grip and confidence to handle demanding off-road conditions. 

G-Series All Road:GT-1 AR and GT-1 iAR

If your rides split roughly 50/50 between tarmac and tame dirt, then All Road is your jam. The GT-1 iAR feels road bike quick but with room for up to 35-40c tires. The geometry leans towards the quick and nimble end of the spectrum, with steeper angles and a shorter wheelbase, making perfect for riders who want that zippy road feel without worrying about the occasional gravel connector. 

The Lines Can Get Blurry

A 700x45c tire is mighty capable, but some riders—and some rides—can warrant going even bigger. In the past few years we’ve seen pro racers running straight-up MTB tires in some especially demanding gravel events, and if your ideal gravel adventure involves bike packing say, the Denali Highway in Alaska (which we’ve done), you’ll want all the tire you can fit. For that, we offer the Mosaic GT-1X, designed with mounts for bags and clearance to fit up to 29.2.25 tires. 

On the other end of the spectrum, there’s ‘fast gravel’. In 2024, Mosaic Team Rider Brennan Wertz chose to run his all-road GT-1 iAR with (admittedly fat) slicks for his Gravel National Championships win in Gering, Nebraska.

“…it [the GT-1 iAR] shines in a very special set of circumstances: traditional fast gravel courses, dry conditions or at least no peanut butter mud. Normally my go-to setup would be the GT-1 i45, with a larger knobby tire and a 1x drivetrain, but this iAR setup is one I really love racing…I rode it last year at the old SBT GRVL course, last year’s Gravel Worlds Nebraska, U.S. National Championships, and a Grasshopper Race called the Huffmaster Hopper. It’s just super versatile, with quicker handling, a tighter wheelbase, 2x groupset and gearing, it just rides like a big tire road bike.

The Real Question: What Do You Want to Ride?

Is your idea of a perfect ride a six-hour epic across rugged backcountry roads? Would you rather have more cush and grip than outright speed? Go with the GT-1 45. Do you love fast group rides and twisty road descents, but want the freedom to hit a few trails and buffed singletrack on the way home? All Road.

Of course, bikes aren’t limited by labels. The best bike is the one that matches your local terrain, your riding style, and yes, even your mood on any given day. It’s all about personal preferences and priorities.

Got questions about your next dream build? Reach out to your local Mosaic dealer or drop us a line. Let’s geek out over tire pressure, gear ratios, and all the good stuff that makes your next ride even better.

Behind The Bike // Sheldon’s RCCLA RT-1d // The Cub House

Rapha Inspired, Cub House Built

Since we’re unable to visit our friends and customers in person for the foreseeable future, we’re starting a new series of blog posts to stay connected and build upon the relationships we have with our shops, our customers, and their bikes. Behind the Bike will feature Mosaic riders from around the world, a bit about their cycling story, their special bike, and the shop that made it all possible. This week, we’re kicking it off with Sheldon’s Rapha Cycling Club Los Angeles inspired RT-1d, built by The Cub House (@itsnotabikeshop).

A bit from Sheldon.I’m Sheldon and I’m the proud owner of this Mosaic RT-1d. My cycling journey started 13 years ago when I got a road bike to get fit while providing care for my mother who was recovering from surgery to remove a large brain tumor. I hadn’t ridden a bike since I was a kid so learning to ride a road bike was a real struggle. I kept at it and found myself becoming a regular on competitive group rides where I lived. Fast forward a bit, and I found myself exploring the rugged mountains surrounding Los Angeles. It’s a special thing, being able to ride into such beautiful and remote places that most people in LA don’t even know exist, and go flying back down into the second largest metro area in the country.

  

Why do you ride?

I ride because of the friendships I’ve made, the places I get to visit, and the mental & physical health benefits that sustain me. My main goal is to keep riding. I always say that the riders still getting out and putting in the miles at 50+ are my cycling heroes.

What’s your favorite ride?

My favorite ride starts on the sand in Santa Monica and goes up Sullivan Canyon, turning from pavement to dirt before it tops out on the ridge of the Santa Monica Mountains. It goes from one of the most famous beaches in the world, high into the mountains where there are almost no signs of civilization. It’s just beautiful.

Tell us a bit about your bike!

I chose the RT-1d because I wanted a light bike that rode beautifully and one that would last. Disc brakes allow me to keep up with current wheel technology and give me confidence on the dirt and steep descents that I encounter. The RT-1d has delivered everything that I could have wanted in a bicycle and more. It’s light, rides beautifully and power transfer is outstanding. I threw everything I had at the bike on the first ride, including long climbs, dirt descents, and even a flat-out pace line. The RT-1d handled it all superbly. In the future I’d like to race this bike at the Belgian Waffle Ride and climb Mt. Baldy and Gibraltar.

What’s the story on the finish work?

I had a blast helping brainstorm the paint scheme, logos, and lettering on my bike with the help of The Cub House and Mosaic. My family has been in LA for 4 generations, which is rare. I didn’t fully appreciate the incredible diversity within LA until I started cycling. The bicycle made me appreciate my city for a whole new reason. Growing up in LA, I saw a lot of people with Old English type tattoos representing their communities, so I knew that I wanted my name to stand out like that on the bike. I’m a founding member of the Rapha Cycling Club Los Angeles chapter, so I included the logo from RCCLA incorporating winged mountains for the City of Angels, as well as the the LA logo to celebrate my heritage. Finally, I put the “40” on the top tube because it’s my 40th birthday present from my wonderful family. I’m a middle aged cyclist and damn proud of it!

The Cub House – San Marino, CA

We’re proud to work with partners like The Cub House, who provide world-class service and a great experience for their customers time and time again. Thanks for keeping it fun. They can be a tricky bunch to describe really, but I think they say it best themselves…

“Cycling is serious enough already, so there is no need to cast ourselves in the same light. It’s ok to talk about watts per kilo, but it’s also good to talk about watts per cheeto (that’s how many watts you can hold while eating flaming hot cheetos). We also understand that performance based goals like Strava are relevant, but so is Pizza Strava #pizzastrava (how many King of the Pepperonis do you have?). We believe above all else that riding bikes is fun & more people should do it. Team Dream is a team for everyone. Now let’s get out there and chase some sunsets…” For more of that mentality, follow them here! (@itsnotabikeshop // @teamdreambicyclingteam)