Trek Checkpoint ALR 3 2025

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  • Overview
  • Checkpoint ALR 3 is the best value gravel bike in the lineup. Kitted out with a 300 Series Alpha Aluminum frame, Checkpoint ALR 3 is just as responsive on chunky gravel roads as it is smooth on the tarmac.

Product details

IN STORE PICKUP OR LOCAL DELIVERY ONLY

Checkpoint ALR 3 is the best value gravel bike in the lineup. Kitted out with a 300 Series Alpha Aluminum frame, Checkpoint ALR 3 is just as responsive on chunky gravel roads as it is smooth on the tarmac. Tubeless-ready wheels help fight punctures in the rough while a 2x9-speed Shimano groupset and mechanical disc brakes balance budget with reliability.

 

 

IT'S RIGHT FOR YOU IF

You want to make the jump into the wide world of gravel, exploration, and even daily commutes that wander off the beaten path – and you don't want to break the bank leaping in.

THE TECH YOU GET

A responsive 300 Series Alpha Aluminum frame, hidden cables that won't interfere with bags, integrated rack, fender, and frame bag mounts, a 2x9 Shimano Sora drivetrain for smooth shifting on punchy climbs and variable terrain, mechanical disc brakes for ease of stopping quick in all conditions, tubeless ready rims, and wide Bontrager Girona Pro 700x42c gravel tires for added comfort and traction.

THE FINAL WORD

When you want to start exploring the road less traveled, reach for Checkpoint ALR 3. This budget-minded gravel bike gives you room to grow from rugged commutes to gravel grinds with economical components and a comfortable, capable frame that's built to take you on every adventure.

WHY YOU'LL LOVE IT

The durable and capable 300 Series Alpha Aluminum frame makes for a fun, stable, and responsive ride

You get serious versatility that's suited for a wide variety of ride styles, from gravel and bikepacking to daily commutes

Massive tire clearance means you can use tires up to 45c for extra traction and stability in any conditions

Fork, top tube, and integrated frame mounts make it easy to carry gear and water

Powerful mechanical disc brakes make stopping in all conditions easy

SPECS

 

FRAMESET

Frame with Fork: 300 Series Alpha Aluminum, tapered head tube, Internal cable routing, 3S chain keeper, T47 BB, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm thru axle

Fork: Checkpoint, full carbon, tapered carbon steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle

WEIGHT
 
Weight Limit: This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
 
WHEELS

Hub Front: Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle

Skewer Front: Bontrager Switch thru axle, removable lever

Hub Rear: Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle

Skewer Rear: Bontrager Switch thru axle, removable lever

Rim: Bontrager Paradigm, Tubeless Ready, 24-hole, 21mm width, Presta valve

Spokes: 14g stainless steel, black

Tire: Bontrager Girona Pro, Tubeless Ready, GR puncture protection, aramid bead, 60 tpi, 700x42mm

Tire Part: Bontrager TLR sealant, 180 ml/6 oz

Rim Strip: Bontrager TLR

Max Tire Size: See service manual

DRIVETRAIN

Shifter: Shimano Sora R3000, 9 speed

Front Derailleur: Shimano Sora R3000, 31.8mm clamp

Rear Derailleur: Shimano Sora R3000, mid cage, 34T max cog

*Crank: Size: 49
FSA Omega, 46x30, 165mm length

Size: 52, 54
FSA Omega, 46x30, 170mm length

Size: 56, 58
FSA Omega, 46x30, 172.5mm length

Size: 61
FSA Omega, 46x30, 175mm length

Cassette:  Shimano Sora HG400, 11-32, 9 speed

Chain: Shimano Sora HG53, 9 speed

Max Chainring Size: See service manual

COMPONENTS

*Saddle: Size: 49, 52
Bontrager P3 Verse Comp, steel rails, 155 mm width

Size: 54, 56, 58, 61
Bontrager P3 Verse Comp, steel rails, 145 mm width

Seatpost: Bontrager alloy, 27.2mm, 12mm offset, 330mm length

*Handlebar: Size: 49
Bontrager Elite Gravel, 38 cm width

Size: 52
Bontrager Elite Gravel, 40 cm width

Size: 54, 56
Bontrager Elite Gravel, 42 cm width

Size: 58, 61
Bontrager Elite Gravel, 44 cm width

*Stem: Size: 49
Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 70mm length

Size: 56, 58
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length

Size: 61
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length

Brake: Tektro C550 mechanical disc brake, dual piston, flat mount

Brake Rotor: Tektro, centerlock, 160mm

Rotor Size: Max brake rotor sizes: 160mm front & rear

 

 

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