2025 Radon Bikes Regard AL 10.0

	50cm	53cm	56cm	58cm	61cm
Stack	530mm	554mm	588mm	609mm	633mm
Reach	384mm	386mm	389mm	389mm	398mm
Stack to Reach Ratio	1.38:1	1.44:1	1.51:1	1.57:1	1.59:1
Seat Tube Length, Unknown	470mm	500mm	530mm	550mm	580mm
Top Tube Length, Effective/Horizontal Unknown	518mm	537mm	560mm	575mm	592mm
Top Tube Slope	8.5deg	7.9deg	8.4deg	8.6deg	7.9deg
Head Tube Angle	69deg	70deg	71.4deg	72deg	72.5deg
Seat Tube Angle	75.8deg	74.7deg	73.8deg	73deg	73deg
Head Tube Length	113mm	135mm	165mm	185mm	208mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	281mm	281mm	281mm	281mm	281mm
Chainstay Length	439.5mm	439.5mm	439.5mm	439.5mm	439.5mm
Chainstay Length Horizontal	433.9mm	433.9mm	433.9mm	433.9mm	433.9mm
Front-Center	614.1mm	614.1mm	616.1mm	616.1mm	628mm
Front-Center Horizontal	610.1mm	610.1mm	612.1mm	612.1mm	624.1mm
Wheelbase	1044mm	1044mm	1046mm	1046mm	1058mm
Fork Offset/Rake	46.2mm	45.1mm	46.2mm	45.6mm	46.4mm
Trail	85.2mm very high	79.8mm high	69.3mm high	66.1mm high	62.1mm mid/neutral
Mechanical Trail	79.5mm	75mm	65.7mm	62.8mm	59.2mm
Wheel Flop	28.5mm	25.7mm	21mm	19.4mm	17.8mm
Standover Height	745mm	773mm	804mm	824mm	854mm
Tire to Pedal Spindle	93.1mm 170 mm cranks	90.6mm 172.5 mm cranks	92.6mm 172.5 mm cranks	90.1mm 175 mm cranks	102mm 175 mm cranks
Pedal Spindle to Ground Clearance	111mm 170 mm cranks	108.5mm 172.5 mm cranks	108.5mm 172.5 mm cranks	106mm 175 mm cranks	106mm 175 mm cranks

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.radon-bikes.de/en/roadbike-gravel/gravel/regard-al/regard-al-100-2025/

Geometry