2026 Marin Bikes Headlands 3

	49	52	54	56	58	60
Stack	550.3mm	565.7mm	581.8mm	600.8mm	619.7mm	638.7mm
Reach	370mm	372.8mm	372.7mm	386.4mm	411.4mm	425.8mm
Stack to Reach Ratio	1.49:1	1.52:1	1.56:1	1.55:1	1.51:1	1.5:1
Seat Tube Length, C-T	440mm	470mm	490mm	510mm	530mm	550mm
Top Tube Length, Effective/Horizontal Center	520mm	531mm	541mm	559mm	590mm	610mm
Top Tube Slope	14.5deg	12.8deg	12.3deg	11.9deg	11.2deg	10.8deg
Head Tube Angle	70.5deg	70.5deg	70.5deg	70.5deg	70.5deg	70.5deg
Seat Tube Angle	74.5deg	74deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	110mm	125mm	140mm	160mm	180mm	200mm
Bottom Bracket Drop	76mm	76mm	76mm	76mm	76mm	76mm
Bottom Bracket Height	280mm	280mm	280mm	280mm	280mm	280mm
Chainstay Length	420mm	420mm	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	413.1mm	413.1mm	413.1mm	413.1mm	413.1mm	413.1mm
Front-Center	592.8mm	599.8mm	604.7mm	623.6mm	655.4mm	677.2mm
Front-Center Horizontal	587.9mm	594.9mm	599.9mm	618.9mm	650.9mm	672.9mm
Wheelbase	1001mm	1008mm	1013mm	1032mm	1064mm	1086mm
Fork Offset/Rake	50mm	50mm	50mm	50mm	50mm	50mm
Trail	73mm high	73mm high	73mm high	73mm high	73mm high	73mm high
Mechanical Trail	68.8mm	68.8mm	68.8mm	68.8mm	68.8mm	68.8mm
Wheel Flop	23mm	23mm	23mm	23mm	23mm	23mm
Standover Height	684mm	701mm	705mm	725mm	745mm	765mm
Tire to Pedal Spindle	66.8mm 170 mm cranks	73.8mm 170 mm cranks	73.7mm 175 mm cranks	92.6mm 175 mm cranks	124.4mm 175 mm cranks	146.2mm 175 mm cranks
Pedal Spindle to Ground Clearance	110mm 170 mm cranks	110mm 170 mm cranks	105mm 175 mm cranks	105mm 175 mm cranks	105mm 175 mm cranks	105mm 175 mm cranks

	49	52	54	56	58	60
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	45mm	45mm	45mm	45mm	45mm	45mm
Tire Width Max	50mm	50mm	50mm	50mm	50mm	50mm
Tire Outer Diameter	712mm	712mm	712mm	712mm	712mm	712mm
Bike Length with Tires	1713mm	1720mm	1725mm	1744mm	1776mm	1798mm
Crank Length	170mm	170mm	175mm	175mm	175mm	175mm
Handlebar Width	420mm	420mm	420mm	440mm	440mm	440mm
Stem Length	60mm	60mm	60mm	60mm	70mm	70mm

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.

Category Trend

Source:https://www.balfesbikes.co.uk/bikes/gravel-adventure-bikes/marin-headlands-3-gravel-bike-2026-in-green__98449

Geometry