Marin Four Corners 1 2025 Adventure Bike — Built to Roam

Weekday commute, weekend adventure—the Marin Four Corners 1 2025 takes it all in stride! This steel-framed explorer feels just as at home on the asphalt as it does in the dirt. Comfortable, tough, and ready to carry a full load, it'll take you from your morning commute to the most remote trails.

CrMo steel, dialed in for adventure

The secret behind the Four Corners? A butted 4130 CrMo steel frame and fork. That means plush comfort on rough roads and rugged strength that holds up under fully loaded touring and bikepacking. And don't let that classic frame material fool you—it's anything but low-tech. Marin tapped biometric fit data to offer five frame sizes, with size-matched 650b or 700C wheels that perfectly suit riders from 4'11" to 6'4".

Why you'll love it

• Butted 4130 CrMo steel frame and fork: Soaks up rough roads while staying strong enough for heavy-duty touring.
• Beyond Road off-road-ready geometry: Keeps you steady and confident the moment you leave the pavement—no beat skipped.
• High front-end: All-day comfort and heads-up visibility so you can ride relaxed and aware.
• 40mm multi-surface Vee GP tires: Reliable grip and a smooth roll, wherever your adventures lead.
• Shimano Sora 3x9 drivetrain: Supremely reliable shifting with the right gear ratio always at your fingertips, uphill or on the flats.
• Tektro Spyre-C mechanical disc brakes: Controlled, consistent stopping power, even fully loaded.

Ready for every escape

The Four Corners 1 comes prepped to haul your gear. You get six bottle mounts, rack and fender eyelets, lowrider fork mounts, and generous tire clearance. Set it up your way, for every condition and every terrain.

Who it's for

The Four Corners 1 is made for urban commuters and adventure riders who want one bike that does it all. Weekday bike commutes, weekend gravel escapes, multi-day tours, or your first big cycling journey—it rises to whatever you plan. Versatile and built to last, it turns every ride into an invitation to explore farther.

Key details

• Butted 4130 CrMo steel frame and fork
• Beyond Road off-road-ready geometry
• Five frame sizes, size-matched 650b or 700C wheels (riders 4'11"–6'4")
• High front-end for all-day comfort
• Six bottle mounts
• Rack and fender eyelets, lowrider fork mounts
• Generous tire clearance
• 40mm multi-surface Vee GP tires
• Shimano Sora 3x9 drivetrain
• Tektro Spyre-C mechanical disc brakes

Don't let the road set your limits. Hop on the Marin Four Corners 1 2025 today and go explore well beyond the asphalt!