2025 Sonder Santiago 105

	Small	Medium	Large	X-Large
Stack	528mm	553.9mm	579.5mm	598.6mm
Reach	375mm	390mm	400mm	405mm
Stack to Reach Ratio	1.41:1	1.42:1	1.45:1	1.48:1
Seat Tube Length, C-T	460mm	500mm	540mm	580mm
Top Tube Length, Effective/Horizontal Center	532mm	554.1mm	571.7mm	582.3mm
Top Tube Slope	9.8deg	8deg	6.4deg	4.3deg
Head Tube Angle	72deg	72deg	72deg	72deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	120mm	145mm	170mm	190mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm
Bottom Bracket Height	278mm	278mm	278mm	278mm
Chainstay Length	420mm	420mm	420mm	420mm
Chainstay Length Horizontal	414.1mm	414.1mm	414.1mm	414.1mm
Front-Center	581.3mm	608.8mm	617.1mm	628mm
Front-Center Horizontal	577.1mm	604.8mm	613.1mm	624.1mm
Wheelbase	991.2mm	1018.9mm	1027.2mm	1038.2mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Trail	60.5mm mid/neutral	60.5mm mid/neutral	60.5mm mid/neutral	60.5mm mid/neutral
Mechanical Trail	57.5mm	57.5mm	57.5mm	57.5mm
Wheel Flop	17.8mm	17.8mm	17.8mm	17.8mm
Standover Height	749.1mm	779.2mm	812.2mm	842.5mm
Tire to Pedal Spindle	63.3mm 170 mm cranks	90.8mm 170 mm cranks	99.1mm 170 mm cranks	110mm 170 mm cranks
Pedal Spindle to Ground Clearance	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 mm cranks	108mm 170 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://alpkit.com/products/sonder-santiago-105-hydraulic

Geometry