700c, 27-Inch & 650c

The Strada is Challenge's go to tire for long days on the road. This all-condition tire combines a round profile that takes the sting out of rough pavement with a construction that provides maximum control and low rolling resistance. This tire takes tubeless to a higher performance level by combining TLR's properties with a handmade construction for the ultimate in traction and ride quality. This tire includes PPS Ganzo, a lightweight and supple Puncture Protection System placed between the tread and casing to increase resistance to punctures. And puncture protection is enhanced when combined with the appropriate tubeless sealant. 260TPI SuperPoly casing.

Thanks to its DuraSkin anti-tear fabric, the Grand Prix 4-Season holds up under extreme conditions. In the Paris – Roubaix race, the “Hell of the North”, cyclists equipped with DuraSkin enhanced tires have the fewest tire-related problems during the race. Incorporating Continental's special wear resistant carbon compound, the tire is characterized by very good mileage performance as well as excellent adhesion on wet roads and at low temperatures. With the 23mm, 25mm, 28mm, and 32mm versions, the Grand Prix 4-Season makes it possible to select the right tire for various road qualities and comfort requirements. A double Vectran Breaker belt under the tread raises the puncture and cut protection to the highest level available on the market.

- Compound: ZSG AGILE COMPOUND - Casing: Advanced Extra Alpha Cord

The Corsa Control tackles greasy cobbles and rough roads with all the confidence of the Vitttoria's classic Corsa. This chevron tread pattern adds dynamic performance to the Corsa Control tread, allowing for increased grip on slippery surfaces, as well as added durability. - 4 separate Graphene compounds deliver speed, suppleness, durability, and reliability - Corsa level confidence for rough roads - Reinforced Corespun-K casing for increased sidewall protection

Designed for intensive training, it is equally suitable for racing events. The Rubino Pro builds on the standard Rubino platform, utilizing the same exclusive 3C Graphene compound structure, long service life, puncture protection, and sharp handling traits, but substitutes a folding bead material for reduced weight. The Rubino Pro has long been a favorite for both training and racing, and with the addition of Graphene technology compounds, is more versatile than ever! - Graphene rubber compounds

- The Cinturato Velo is designed around reliability in bad road conditions and heavy usage as priority and it still keeps Pirelli DNA thanks to its SmartNET Silica compound and confidence-inspiring handling. - Its patent pending Armour Tech construction combines a bead-to-bead high density layer to an aramid breaker and aramid fibers dispersed into the tread. - The SmartNET Silica compound coupled with Pirelli long experience in tread design, adds the safety and handling in any condition, whether it is wet or dry, Pirelli is already famous for.

Byway is for days of endless hardpack exploration and gravel grinding while also providing noticeable efficiency on any pavement linking it all together. A swiftly smooth centerline is paired to a textured intermediate section that provides a seamless transition onto small outer knobs for unwavering traction in loose dirt and gravel. Prominent outer knobs also extend down the sidewall to provide an additional level of defense from roadside unpleasantries of all shapes and sizes. Byway 34 is an identical replacement to the previously named Exposure 34 tire. We renamed the tire to create a uniform naming structure where all tires are named according to the tread pattern. SG2 PUNCTURE PROTECTION: Most sizes of this tire are available with our all-new SG2 Puncture Protection, which is a lightweight nylon insert that provides bead-to-bead coverage and ensures every area of the tire is defended against slashes and punctures. As events become progressively rougher and cyclists pedal farther, gravel gets tougher. It only makes sense for gravel tires to become tougher as well. Please refer to the charts below to determine which versions are available with SG2. - Nylon fibers have a flat profile, which reduces the amount of rubber needed to fill the gaps between fibers and minimizes weight. - Protected SG2 gravel tires feature a 120tpi casing, which improves suppleness compared to a traditional 60tpi tire. - SG2 was specifically designed to be a puncture protection layer, but it also improves air retention and eliminates seeping at the sidewall. FEATURES: - Smooth centerline for efficiency with diamond-shaped outer knobs for grip in the dirt. - High volume tire enables a comfortable ride. - Dual Compound rubber means a fast-rolling tire with great corning traction.

The Expanse TCS folding tire is an ideal choice for fast riding on smooth gravel and mixed-surfaces. It's tubeless-ready, so you can ride lower pressure and not have to worry about pinch flats. - Designed to meet ETRTO standards, TCS (Tubeless Compatible System) tires feature the best of both worlds: they boast the ride benefits & reliability of a tubeless tire with the minimal weight of a tube-type tire.

Speaking for itself, Raddler is the radder version of our famed Riddler tread pattern. It combines the expeditious efficiency of a short-knob centerline with get-rad traction of chunky outer knobs. Let's call it a semi-slick, but one designed to increase confidence while you're pushing the limits of gravel. Raddler is an excellent choice for loose terrain where traction takes priority, but efficiency is never far behind. Lean it over, take the inside line, brake late, and stay pinned with the Raddler. SG2 PUNCTURE PROTECTION: These tires are available with our all-new SG2 Puncture Protection, which is a lightweight nylon insert that provides bead-to-bead coverage and ensures every area of the tire is defended against slashes and punctures. As events become progressively rougher and cyclists pedal farther, gravel gets tougher. It only makes sense for gravel tires to become tougher as well. - Nylon fibers have a flat profile, which reduces the amount of rubber needed to fill the gaps between fibers and minimizes weight. - Protected SG2 gravel tires feature a 120tpi casing, which improves suppleness compared to a traditional 60tpi tire. - SG2 was specifically designed to be a puncture protection layer, but it also improves air retention and eliminates seeping at the sidewall. FEATURES: - Short-knob center tread cuts down on rolling resistance while still providing enough bite for out-of-the-saddle traction. - Center and intermediate knobs on the Raddler are slightly taller than those of the original Riddler, thereby increasing tire lifespan without negatively affecting rolling efficiency. - Tall, toothy outer lugs ensure your favorite gravel descent doesn't unravel in the final corner. - Single-ply 60tpi casing provides dependable protection at a minimal weight. - Available with black or tan sidewalls in 40mm and 44mm widths. - All Raddler tires are TCS tubeless compatible.

Among our most versatile drop bar tires, the Venture delivers optimal performance across the widest range of conditions to serve as a truly set-it-and-forget-it gravel tire for riders who demand traction across a wide variety of terrain. Elevated centerline ridges provide consistent working edges that dig in whether hammering up a climb or leaning into a turn. Two rows of outer knobs provide confidence regardless of how hard you're cornering while also providing substantial sidewall protection. Venture is the tire of choice when the destination is unknown but you're sure to encounter a variety of terrain along the way. SG2 PUNCTURE PROTECTION: These tires are available with our all-new SG2 Puncture Protection, which is a lightweight nylon insert that provides bead-to-bead coverage and ensures every area of the tire is defended against slashes and punctures. As events become progressively rougher and cyclists pedal farther, gravel gets tougher. It only makes sense for gravel tires to become tougher as well. - Nylon fibers have a flat profile, which reduces the amount of rubber needed to fill the gaps between fibers and minimizes weight. - Protected SG2 gravel tires feature a 120tpi casing, which improves suppleness compared to a traditional 60tpi tire. - SG2 was specifically designed to be a puncture protection layer, but it also improves air retention and eliminates seeping at the sidewall. FEATURES: - The large, high-volume footprint of each Venture tire allows for more working edges of the tread to always be in contact with the terrain. - Rounded profile with vertical channels to enhance cornering characteristics. - High volume casing enables a comfortable ride. - Dual Compound Rubber means a fast-rolling tire with great corning traction.

Over 10 years of aero product development with a focus on real-world performance has led us to tire development. Tire shape and construction greatly influence aerodynamics, rolling efficiency, and your confidence. SES Road Tires are proven in CFD and the wind tunnel to reduce drag and are constructed to deliver rolling efficiency, durability, and a confidence inspiring ride—regardless of the weather. - Application: Road, Road Race, Triathlon, Time-Trial, All-Road - Smart ENVE System Aero Optimized Shape and Tread Design - Natural and Synthetic Rubber Compound w/Activated Silica for All-Weather Performance - Tubeless Ready and Inner-Tube Compatible - Hookless and Hooked-Bead Rim Type Compatible - Inner-Rim Width Compatibility: 25c (17-21mm); 27c, 29c, 31c (17-25mm) - Weight: 25c (255g), 27c (265g), 29c (275g), 31c (285g) - Vectran Protection Barrier

- The SS and SS+ feature an all-new tread pattern consisting of a smoother, diamond pattern center with more aggressive side lugs. - This tread pattern allows the rider to keep speed going into corners and maintain control throughout any transition a gravel ride could present. - The GravelKing SS incorporates a supple 126 TPI casing with a nylon puncture resistant belt and Panaracer's proprietary ZSG (Zero Slip Grip) compound. - The SS+ uses the same build as the SS but adds a bead-to-bead layer of Panaracer's ProTite puncture material for even more protection against tread and sidewall cuts for those extra demanding courses or rides with sharp flint rock.

Designed for intensive training, the Rubino Pro is equally suitable for racing events. This tire builds on the standard Rubino platform, utilizing the same exclusive 3C Graphene compound structure, long service life, puncture protection, and sharp handling traits, but substitutes a folding bead material for reduced weight. The Rubino Pro has long been a favorite for both training and racing, and with the addition of Graphene technology compounds, is more versatile than ever. - 150 TPI Nylon casing for high mileage - 3 compounds in the tread (3C) for increased wear life and better rolling - All-rounder for any condition - Functionalized GRAPHENE 2.0 compound allows for increased wet grip

Whether in Gravel or Cyclocross, one thing is for certain-course conditions are constantly changing. When you roll up to the start line, be confident knowing that you have the performance advantage of the Terreno Mix all conditions tread, no matter the terrain. At the heart of the design is a fast rolling center ridge, which is designed to minimize rolling resistance, while still providing confident braking traction. Cornering and off camber work is confidently handled by alternating open shoulder lugs. These lugs are shaped to allow a supple feel for pavement and hardpack surfaces, while still offering a solid effective edge for grass and loam terrain. The exclusive 3C Graphene compound structure places 3 unique compounds where you need them most, adding to the performance. - Exclusive 3C compound construction featuring Graphene compound technology - Fast rolling center-ridge design - Open shoulder lugs for secure off-camber traction - Traditional tread profile, for smooth transitions, across varied terrain

The ultimate wet weather weapon Many a battle has been lost due to a lack of preparation. In Gravel and Cyclocross racing, having the right tires is often the critical difference between winning and learning the hard way. When developing the Terreno Wet tread, we worked with the top athletes to gather their wish-list of performance traits that would make the ultimate wet weather weapon. Versatility was the common thread. It had to roll like a race tire, corner on rails, and be virtually clog-proof. A tall order by any measure. The final product is a tread that performs unlike any other. With the open alternating-lugged design and full siping, the Terreno Wet delivers pro performance in a range of soft terrain. - Alternating center ridge rolls fast and provides forward traction - Full knob siping keeps the tread flexible on slick surfaces - TNT tire bead

Corsa inspired tread design, for paved surfaces and hard-packed gravel. The smooth Corsa inspired center rolls fast, while the side tread "scales" provide durable bite when cornering and braking. - Three compounds in the tread (3C) for increased wear life and grip - Functionalized GRAPHENE 2.0 compound delivers ultimate performance - Corsa-inspired smooth center tread minimizes rolling resistance - Gravel tire designed for paved surfaces and hard-pack terrains - Side tread “scales” provide dependable bite through corners, and when braking

- 120tpi casing with Aramid TechBELT puncture protection - SmartEVO compound

For your way off-road. For more comfort. For the adventure. Be it the long tour, or the shortcut on your way home. The new gravel Terra series by Continental gets you there. Made to get you over rough and smooth. Choose alter road, choose Terra. Tubeless Ready Developed especially for the mountain bike sector, this additional puncture protection layer which completely encircles both tire beads makes our carcasses robust and impervious against damage and penetration from foreign objects. For maximum effect we combine ProTection with BlackChili Compound. The result: versatile, low weight and an attractive design. In addition, tires made using this technology can also be used as Tubeless Ready. ProTection The ProTection technology gives our tires their perfect mix of fast rolling, grip and puncture protection. Four plies under the tread and three in the sidewalls make this possible. The whole tire attains greater resilience and becomes less vulnerable to damage.

For finding your way off-road. For more comfort. For the adventure. Be it the long tour or the shortcut on your way home, the Terra gravel series by Continental gets you there over rough and smooth. Choose another road, choose Terra. - A user-optimized tubeless system is specifically designed for road cycling demands. Easy to install and reliable in use. - ProTection technology gives our tires the perfect mix of fast rolling, grip, and puncture protection. Four plies under the tread and three in the sidewalls result in greater resilience and less vulnerability to damage. - A specifically developed tubeless bead seals through its unique shape and provides a stable fit on the rim.

- The Cinturato Velo is designed around reliability in bad road conditions and heavy usage as priority and it still keeps Pirelli DNA thanks to its SmartNET Silica compound and confidence-inspiring handling. - Its patent pending Armour Tech construction combines a bead-to-bead high density layer to an aramid breaker and aramid fibers dispersed into the tread. - The SmartNET Silica compound coupled with Pirelli long experience in tread design, adds the safety and handling in any condition, whether it is wet or dry, Pirelli is already famous for.

Boston, the original hotbed of North American 'cross and home to some of the nastiest courses. If you're flying into Boston's Logan airport, you better be ready for rain, roots and mud. The BOS, even more aggressive than the PDX, has buttressed side knobs for outstanding traction in super muddy corners and off-cambers, plus center tread that's all bite when it comes down to a tractor pull. - Clincher size: 33 x 700 - Weight: 397 grams tubeless ready - Tractor style tread for the harshest mud - Buttressed side knobs for excellent corning traction - Tubeless ready with proprietary tubeless casing - 120 TPI folding lightweight and aggressive

The big news from Donnelly is the upcoming EMP gravel tire, which pulls its name from the airport code for Emporia, Kansas, home of a kinda popular gravel race that crushes souls every year. The tire is a departure from their usual tread design, getting a tighter tread block pattern without a well-defined center strip like most all of their other tires. It’s still designed to roll fast, which is key if you’re racing any long distance gravel bike event, but with bigger side knobs to handle more aggressive cornering. - Smooth-rolling center knobs and aggressive shoulder lugs - Soft rubber compound for extra grip and shock absorption - Integrated puncture protection belt under the tread - Tire Intended Use: Gravel - Labeled Size: 700 x 38 - Tire Bead: Folding - Tire Diameter: 700c - Tire Type: Tubeless Ready Clincher - Weight: 484 - Weight (oz): 17 - Flat Protection: Tread

- A classic road tire featuring the traditional chevron tread pattern - The LGG provides a supple ride, durable yet lightweight construction, and puncture-protection belt under the tread - 120 TPI version is dual compound tread: 70a in center, softer 60a on sides. 60 TPI is single compound tread 70a

- An adventure tire designed for mixed conditions - Smooth-rolling center knobs and aggressive shoulder lugs - The combination of smooth-rolling center knobs and aggressive shoulder lugs provide great traction and durability for gravel roads, trails, cyclocross, urban assault and even pavement - The MSO will fit on your cyclocross or gravel bike, commuter, or touring rig - MSO is the airport code for Missoula, Montana, home of the Adventure Cycling Association and the inspiration for countless cycling journeys - Designed to bridge the gap between pavement and blazing your own trail

Gravel and dirt road racing tire - Dual-Compound for longevity - Gravel-specific tread pattern - Tubeless Ready (TR) Maxxis' first gravel-specific tire, the Rambler, is designed with the volume you need for comfort and the tread you need for speed and control. Tightly packed center knobs are ramped for rolling efficiency on hardpack roads, and spaced-out side knobs provide predictable cornering in varied terrain.

At home on singletrack trails and gravel - Aggressive gravel tire - Optimal for off-road touring and adventures - Tubeless Ready (TR) The Ravager is a gravel tire for the riders out there willing to brave aggressive terrain with only their drop bars and a tiny amount of rubber beneath them. While other tires are designed to let you ride beyond the end of the road, the Ravager opens up new line choices, camping spots, and epic adventures where no road ever existed. Raised, square-edged center knobs provide climbing and braking traction on moon dust-covered trails, and oversized cornering knobs keep you and your gear out of the dirt to conquer another turn.

Our most durable road offering - Diamond knurled slick design - MaxxShield for maximum puncture resistance - Training tire Our most popular training tire, providing excellent traction, durability, and plenty of road miles in any condition. Maxx Shield helps provide a tire that Re-Fuses to puncture.

High-volume Tubeless Ready adventure tire - Diamond-knurled slick design - Dual-compound rubber - MaxxShield bead-to-bead protection - Tubeless Ready (TR) Our most popular training tire, modernized with tubeless technology and higher volumes for even more reliability and comfort. The familiar diamond tread pattern keeps things rolling smoothly, even as the pavement crumbles into gravel and hardpack dirt.

- Semi-slick tire for pavement, hard-packed dirt, and gravel. - Perfect for rides that are mostly smooth, with occasionaly off-road adventures

The Strada is Challenge's go to tire for long days on the road. This all-condition tire combines a round profile that takes the sting out of rough pavement with a construction that provides maximum control and low rolling resistance. This handmade clincher combines a supple, 300TPI SuperPoly casing with natural rubber tread for long distance comfort, confident cornering, and quick handing. This tire includes PPS Ganzo, a lightweight and supple Puncture Protection System placed between the tread and casing to increase resistance to punctures.