700c, 27-Inch & 650c

The Sensamo Control provides all-season grip for urban riding and commuting. - Deep tread sipes and all-season rubber provide excellent grip - Reflective sidewall for increased low-light visibility - APL 0.7mm puncture protection layer under tread

The Kenda Kourier is larger than a skinny road tire, yet thinner and smoother than a mountain tire, making it a perfect hybrid commuting tire. - Kenda endorses the use of fluid based sealants only in specifically designated Kenda sealant compatible tire

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 TLR clincher with 120TPI nylon casing provides both performance, durability, and puncture protection when combined with the appropriate tubeless sealant. TLR - TLR tires versions can be ridden tubeless with the addition of sealant but can also be run with an inner tube. - A bead-to-bead inner coating gives added puncture protection to these tubeless ready tires and greatly reduces gradual loss of air pressure. An aramid bead protection strip increases tire longevity and reduces rim chafing.

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

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.

- 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.

The wire bead version of the new Zaffiro tread offers many of the same traits that established the Zaffiro family as the standard in performance training but at an entry-level price point. Employing the same tread profile as the Zaffiro Pro, the durable, rigid-bead Zaffiro is the top choice for replacement tires at a great price. - Extremely durable tires for performance training - Modern tread design for long-lasting durability

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

Race it hard or just head off the beaten path. The Strada Bianca takes the proven construction of the Paris-Roubaix and adds volume to take you comfortably over less-than-perfect surfaces. Challenge introduces STRADA BIANCA H-TLR 45. The staple herringbone-design tire proves its handmade performances on rougher terrain with a new gravel-specific construction and an added beefier new 45mm size. The STRADA BIANCA 45 is the tire designed to take you comfortably rolling over rough pavement, cobbles, sandy or hardpack fields, to literally floating over the more enduring dry, rocky terrains. It is the first 45mm tire in the Challenge range.

Make your mark on the gravel scene with the Gravel Grinder. This tire combines a fast rolling diamond center with aggressive shoulder knobs that only hook-up when the terrain gets soft, muddy, or a bit sketchy. 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 combines a supple, yet durable Corazza Armor casing for improved sidewall protection, excellent puncture-resistance from our PPS Ganzo, and a high mileage, grippy, natural SMARTplus compound. And puncture protection is enhanced when combined with the appropriate tubeless sealant. 260TPI SuperPoly casing.

- Smart DualGuard Protection - Addix-E Compound - ECE-R75 certification makes the tires ready for E-Bikes of all classes

- Never before has an entry-level model from Schwalbe been so good! - This update was really worth it. - The K-Guard puncture protection, a smooth 50-EPI carcass, and the improved Silica compound give the Lugano II impressive race performance at an excellent price.

- The exceptional profile and OneStar rubber compound make the Schwalbe X-One one of the fastest cross tires ever. - To make it the absolute high-flyer, mount it without a tube on a tubeless-compatible wheel. - In combination with the right wheel you can run tubeless tires for cyclo-cross with extremely low air pressures without fear of "Burping" (unwanted air leakage). - For instance, it works extremely well with the Iron Cross from No Tubes.

Our flagship road race tire - 170 TPI casing - HYPR compound - Pro-level competition tire - K2 puncture protection Maxxis' all-purpose road race tire receives a refresh with a lighter-weight casing, upgraded puncture protection, and a revised tread pattern. The result is a lighter, faster, and more durable High Road.

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 lightest and fastest road tire - 170 TPI casing - HYPR-S compound - K2 puncture protection The Maxxis High Road SL is the fastest and lightest road racing tire we have ever produced. Starting with our lightest and most supple 170 TPI casing, we add our K2 puncture protection, and top it with our fastest compound: HYPR-S. This new compound retains the grip found on the original High Road, but reduces rolling resistance by 12%.

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

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

- Smooth-rolling tread pattern for street use - Deep grooves help sipe water away in wet weather

Resolute 42 is the ultimate all-weather gravel tire for those who believe there is a perfect tread pattern for every ride. Small, square knobs deliver consistent bite into a variety of terrain, while the ample spaces between them prevent packing up when conditions become fun (a.k.a wet). Truly all-season in nature, its 42mm width makes it a set-it-and-forget-it gravel tire for endlessly undulating roads through all varieties of weather. Usage: Gravel / Monstercross Conditions: Dry to Wet / Hardpack to Loose Gravel - 650B: 440g - 700c: 460g

- Urban tire with road tread pattern - 5mm thick anti-puncture protection layer

- Never before has an entry-level model from Schwalbe been so good! - This update was really worth it. - The K-Guard puncture protection, a smooth 50-EPI carcass and the improved Silica compound give the Lugano II impressive race performance at an excellent price.

- The Cinturato All Road is your choice when tarmar, hardpack trails or light gravel are on your way. - Reinforced and sturdy tubeless-ready 60tpi carcass plus a bead-to-bead protection layer. - Designed to resist lateral cuts on different grounds. - A slick center line encourages fast and smooth riding on tarmac and pavement. - Progressively higher small paddle-knobs are designed to provide solid traction on light gravel, with more aggressive and solid knobs, derived from our Scorpion range, for cornering confidence and leaning. - ProCompound Gravel developed for extended mileage. - The combination of tread design together with the compound prioritizes traction and grip for quick riding on any surface either in town or countryside.

- Ultimate touring tire Specs: - Tire Diameter/ISO: 700C/622 - 67 TPI - Bead: Folding - Tire Compound: TravelStar - Tire Technology: DoubleDefense - Tire Type: Clincher

- Tubeless tires guarantee the lowest rolling resistance while maintaining very high puncture resistance

- New tread design, improved compound and quality workmanship - The Schwalbe One sets a new benchmark in terms of quality and performance

- The next generation of tubeless tires. A truly thrilling ride. It's fast. It's reliable. It's light. - The patented MicroSkin construction makes this all possible. The rolling resistance is minimal! - All around cut resistance and puncture protection are extraordinary. - This is the absolute top model from Schwalbe! - The Schwalbe One Pro can also be used with a normal tube, but its true strengths are experienced only in tubeless form.

Make your mark on the gravel scene with the Gravel Grinder. This tire combines a fast-rolling diamond center with aggressive shoulder knobs that only hook-up when the terrain gets soft, muddy, or a bit sketchy. This TLR clincher with 120TPI nylon casing provides both performance, durability, and puncture protection when combined with the appropriate tubeless sealant.. TLR - TLR tires versions can be ridden tubeless with the addition of sealant but can also be run with an inner tube. - A bead-to-bead inner coating gives added puncture protection to these tubeless ready tires and greatly reduces gradual loss of air pressure. An aramid bead protection strip increases tire longevity and reduces rim chafing.

T-Serv ProTite is a great performance tire for urban city use, incorporating ZSG compound, 400D Lite Extra Cord, and ProTite puncture-resistant technologies. Hands down, T-Serv is the best urban strength-to-weight-ratio tire on the market today. Need to get through your urban jungle quickly and reliably? T-Serv is the answer. - Urban/Commuter tire - Aramid (Kevlar) folding bead - Max PSI: 90