Compare: 2021 Trek Checkpoint ALR 4 vs Checkpoint ALR 5 vs Checkpoint SL 5 vs Checkpoint SL 6

Overview
Ride Feel
Gearing
Spec Level
Geometry
Specs

Bike Comparison

Only show differences

	Checkpoint ALR 42021 Trek	Checkpoint ALR 52021 Trek	Checkpoint SL 52021 Trek	Checkpoint SL 62021 Trek

MSRP	$1,699	$2,199	$3,129	$3,999
Where to Buy	— $1 At	$1,499 32% off At Trek $2,249 At Cycle Limited See more	— $1 At	— $1 At
Category	Gravel	Gravel	Gravel	Gravel
Weight	22.6 lbs	22.4 lbs	21.4 lbs	20.1 lbs
	3.6	4.6	5.9	6.4
Frame	Aluminum	Aluminum	Carbon	Carbon
Fork	Carbon	Carbon	Carbon	Carbon
Wheels	Aluminum	Aluminum	Aluminum	Aluminum
Wheel Size	700c	700c	700c	700c
Clearance	45c	45c	45c	45c
Brakes	Hydraulic Disc	Hydraulic Disc	Hydraulic Disc	Hydraulic Disc
Groupset	GRX 400, GRX 600	GRX 800, GRX 600	GRX 800, GRX 600	GRX 800
Drivetrain	2 × 10	2 × 11	2 × 11	2 × 11
Brand Site	trekbikes.com	trekbikes.com	trekbikes.com	trekbikes.com

Similar Bikes

Accessories

Ride Feel

Based on frame geometry and build specs.

Rider Position

relaxedaggressive

Terrain

smoothrugged

Checkpoint ALR 4

Checkpoint ALR 5

Checkpoint SL 5

Checkpoint SL 6

Other Gravel bikes

Gear Range

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

36 mph

Checkpoint ALR 4

36 mph

Checkpoint ALR 5

36 mph

Checkpoint SL 5

38 mph

Checkpoint SL 6

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Geometry

Specs

	Checkpoint ALR 42021 Trek	Checkpoint ALR 52021 Trek	Checkpoint SL 52021 Trek	Checkpoint SL 62021 Trek

Frame	300 Series Alpha Aluminum, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, horizontal sliding dropouts, 142x12mm thru axle BB Standard: BB86/BB92, Press Fit Tire Clearance: 45c Colors: Rage Red; Dark Aquatic	300 Series Alpha Aluminium, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, horizontal sliding dropouts, 142x12 mm thru-axle BB Standard: BB86/BB92, Press Fit Tire Clearance: 45c Colors: Rage Red; Dark Aquatic	500 Series OCLV Carbon, IsoSpeed, tapered head tube, Control Freak internal routing, 3S chain keeper, BB90, rack and fender mounts, flat-mount disc, horizontal sliding dropouts, 142x12 mm thru-axle BB Standard: BB86/BB92, Press Fit Tire Clearance: 45c Colors: Rage Red; Dark Aquatic	500 Series OCLV Carbon, IsoSpeed, tapered head tube, Control Freak internal routing, 3S chain keeper, BB90, rack and fender mounts, flat-mount disc, horizontal sliding dropouts, 142x12 mm thru-axle BB Standard: BB86/BB92, Press Fit Tire Clearance: 45c Colors: Rage Red; Dark Aquatic
Fork	Checkpoint carbon, tapered alloy steerer, rack mounts, fender mounts, flat mount disc, 12x100mm thru axle	Checkpoint carbon, tapered alloy steerer, rack mounts, mudguard mounts, flat-mount disc, 12x100 mm thru axle	Checkpoint carbon, tapered carbon steerer, rack mounts, mudguard mounts, flat-mount disc, 12x100 mm thru axle	Checkpoint carbon, tapered carbon steerer, rack mounts, mudguard mounts, flat-mount disc, 12x100 mm thru axle
Bottom Bracket	Shimano RS500, 86mm, PressFit	Shimano RS500, 86 mm, PressFit	Trek BB90	Trek BB90
Headset	FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom	FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom	FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom	FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
Stem	Size: 49, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: 52, 54, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length; Size: 56, 58, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 100mm length; Size: 61, Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 110mm length	Size: 49, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length; Size: 52, 54, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length; Size: 56, 58, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 100 mm length; Size: 61, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 110 mm length	Size: 49, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length; Size: 52, 54, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length; Size: 56, 58, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 100 mm length; Size: 61, Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 110 mm length	Size: 49, Bontrager Pro, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length; Size: 52, 54, Bontrager Pro, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length; Size: 56, 58, Bontrager Pro, 31.8 mm, Blendr-compatible, 7-degree, 100 mm length; Size: 61, Bontrager Pro, 31.8 mm, Blendr-compatible, 7-degree, 110 mm length
Handlebar	Size: 49, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 38cm width; Size: 52, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 40cm width; Size: 54, 56, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 42cm width; Size: 58, 61, Bontrager Elite IsoZone VR-CF, alloy, 31.8mm, 93mm reach, 123mm drop, 44cm width	Size: 49, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 38 cm width; Size: 52, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 40 cm width; Size: 54, 56, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 42 cm width; Size: 58, 61, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 44 cm width	Size: 49, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 38 cm width; Size: 52, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 40 cm width; Size: 54, 56, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 42 cm width; Size: 58, 61, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 44 cm width	Size: 49, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 38 cm width; Size: 52, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 40 cm width; Size: 54, 56, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 42 cm width; Size: 58, 61, Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 44 cm width
Saddle	Bontrager Montrose Comp, steel rails, 138mm width	Bontrager Montrose Comp, steel rails, 138 mm width	Bontrager Montrose Comp, steel rails, 138 mm width	Bontrager Arvada Comp, steel rails, 138 mm width
Seatpost	Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length	Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 330 mm length	Size: 49, 52, 54, 56, Bontrager alloy seat mast cap, 10 mm offset, short length; Size: 58, 61, Bontrager alloy seat mast cap, 10 mm offset, tall length	Size: 49, 52, 54, 56, Bontrager carbon seat mast cap, 20 mm offset, short length; Size: 58, 61, Bontrager carbon seat mast cap, 20 mm offset, tall length

Groupset

Rear Derailleur	Shimano GRX RX400, long cage, 36T max cog	Shimano GRX RX810, long cage, 34T max cog	Shimano GRX RX810, long cage, 34T max cog	Shimano GRX RX810, long cage, 34T max cog
Front Derailleur	Shimano GRX RX400, braze-on	Shimano GRX RX810, braze-on	Shimano GRX RX810, braze-on	Shimano GRX RX810, braze-on
Crank	Size: 49, Shimano GRX RX600, 46/30, 165mm length; Size: 52, Shimano GRX RX600, 46/30, 170mm length; Size: 54, 56, Shimano GRX RX600, 46/30, 172.5mm length; Size: 58, 61, Shimano GRX RX600, 46/30, 175mm length	Size: 49, Shimano GRX RX600, 46/30, 165 mm length; Size: 52, Shimano GRX RX600, 46/30, 170 mm length; Size: 54, 56, Shimano GRX RX600, 46/30, 172.5 mm length; Size: 58, 61, Shimano GRX RX600, 46/30, 175 mm length	Size: 49, Shimano GRX RX600, 46/30, 165 mm length; Size: 52, Shimano GRX RX600, 46/30, 170 mm length; Size: 54, 56, Shimano GRX RX600, 46/30, 172.5 mm length; Size: 58, 61, Shimano GRX RX600, 46/30, 175 mm length	Size: 49, 52, Shimano GRX RX810, 48/31, 170 mm length; Size: 54, 56, Shimano GRX RX810, 48/31, 172.5 mm length; Size: 58, 61, Shimano GRX RX810, 48/31, 175 mm length
Shifters	Shimano GRX RX400, 10 speed	Shimano GRX hydraulic disc	Shimano GRX hydraulic disc	Shimano GRX RX810, 11 speed
Cassette	Shimano Tiagra HG500, 11-34, 10 speed	Shimano 105 HG700-11, 11-34, 11-speed	Shimano 105 HG700-11, 11-34, 11-speed	Shimano Ultegra HG800, 11-34, 11 speed
Chain	KMC X10	Shimano 105 HG601, 11-speed	Shimano 105 HG601, 11-speed	Shimano Ultegra HG701, 11 speed
Brakes	Shimano RX400 hydraulic disc, flat mount	Shimano RX400 hydraulic disc	Shimano RX400 hydraulic disc	Shimano RX810 hydraulic disc

Wheels

Rims	Bontrager Tubeless Ready, 28-hole, 17mm width, presta valve	Bontrager Tubeless Ready, 28-hole, 17 mm width, Presta valve	Bontrager Tubeless Ready, 28-hole, 17 mm width, Presta valve	Bontrager Paradigm Comp 25, Tubeless-Ready, 25 mm rim width
Spokes	14g stainless steel	14 g stainless steel, black	14 g stainless steel, black
Front Hub	Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle	Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle	Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle	Bontrager Paradigm Comp 25, Tubeless Ready, 25 mm rim width, 100x12 mm thru axle
Rear Hub	Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle	Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle	Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle	Bontrager Paradigm Comp 25, Tubeless Ready, 25 mm rim width, Shimano 11/12-speed freehub, 142x12 thru axle
Tires	Bontrager GR1 Comp, wire bead, 60 tpi, 700x40c	Bontrager GR1 Comp, wire bead, 60 tpi, 700x40 c	Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40 mm	Bontrager GR1 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 120 tpi, 700x40 mm
Disc Rotors	Shimano SM-RT70, centerlock, 160mm	Shimano RT70, CentreLock, 160 mm	Shimano RT70, CentreLock, 160 mm	Shimano RT800, CenterLock, 160 mm

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