2025 Trek Bikes Checkpoint ALR 5

	49 cm	52 cm	54 cm	56 cm	58 cm	61 cm
Stack	538mm	553mm	571mm	592mm	609mm	639mm
Reach	393mm	399mm	403mm	407mm	411mm	417mm
Stack to Reach Ratio	1.37:1	1.39:1	1.42:1	1.45:1	1.48:1	1.53:1
Seat Tube Length, Unknown	490mm	520mm	540mm	560mm	580mm	610mm
Top Tube Length, Effective/Horizontal Center	541mm	555mm	570mm	584mm	597mm	617mm
Top Tube Slope	7.2deg	5.7deg	5.5deg	5.7deg	5.5deg	5.5deg
Head Tube Angle	71.2deg	71.6deg	71.8deg	72.2deg	72.3deg	72.6deg
Seat Tube Angle	74.1deg	73.7deg	73.2deg	72.8deg	72.5deg	72.1deg
Head Tube Length	90mm	105mm	125mm	145mm	165mm	195mm
Bottom Bracket Drop	78mm	78mm	76mm	76mm	74mm	74mm
Bottom Bracket Height	273mm	273mm	275mm	275mm	277mm	277mm
Chainstay Length	435mm	435mm	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	428mm	428mm	428.3mm	428.3mm	428.7mm	428.7mm
Front-Center	602.1mm	610.1mm	617.4mm	624.3mm	633.7mm	645.6mm
Front-Center Horizontal	597.1mm	605.1mm	612.7mm	619.7mm	629.3mm	641.3mm
Wheelbase	1025mm	1033mm	1041mm	1048mm	1058mm	1070mm
Fork Offset/Rake	44.9mm	45.6mm	44.6mm	44.8mm	45.4mm	45.1mm
Trail	72mm high	68.7mm high	68.5mm high	65.7mm high	64.4mm mid/neutral	62.7mm mid/neutral
Mechanical Trail	68.2mm	65.2mm	65mm	62.5mm	61.4mm	59.9mm
Wheel Flop	22mm	20.6mm	20.3mm	19.1mm	18.7mm	17.9mm
Standover Height	735mm	765mm	789mm	809mm	829mm	859mm
Tire to Pedal Spindle	86.1mm 165 mm cranks	89.1mm 170 mm cranks	93.9mm 172.5 mm cranks	100.8mm 172.5 mm cranks	107.7mm 175 mm cranks	119.6mm 175 mm cranks
Pedal Spindle to Ground Clearance	108mm 165 mm cranks	103mm 170 mm cranks	102.5mm 172.5 mm cranks	102.5mm 172.5 mm cranks	102mm 175 mm cranks	102mm 175 mm cranks

	49 cm	52 cm	54 cm	56 cm	58 cm	61 cm
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	40mm	40mm	40mm	40mm	40mm	40mm
Tire Outer Diameter	702mm	702mm	702mm	702mm	702mm	702mm
Bike Length with Tires	1727mm	1735mm	1743mm	1750mm	1760mm	1772mm
Crank Length	165mm	170mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	38cm	40cm	42cm	42cm	44cm	44cm
Stem Length	70cm	80cm	80cm	90cm	90cm	100cm
Stem Angle	7deg	7deg	7deg	7deg	7deg	7deg

Published Sizing Recommendations

Height

5 ft 1 in

5 ft 4 in

5 ft 6 in

5 ft 9 in

5 ft 11 in

6 ft 1 in

6 ft 3 in

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

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Source:https://www.trekbikes.com/us/en_US/bikes/bikepacking-touring-bikes/checkpoint/checkpoint-alr/f/F224-2/checkpoint-alr-5-gen-2/41640/5304198