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BQ Singlet

Size Guide


Chest 31"
Front Length 23"
Back Length 23.5"


Chest 33"
Front Length 23.5"
Back Length 24"


Chest 35"
Front Length 24.25"
Back Length 24.75"


Chest 37"
Front Length 24.75"
Back Length 25.25"

All measurements are garment sizing


For qualifiers only, BQ20 is an ultra-lightweight singlet that’s as honed as you are on race day. The body is cut from an Italian-made, breathable and quick-drying mesh, and backed by an even lighter open mesh for increased breathability. The sublimated design features our signature sash and BQ insignia in classic Boston colors.

The Tracksmith BQ Singlet is reserved for those who’ve both qualified and registered for the 2020 Boston Marathon. Qualifiers who have signed up for notifications will receive an email in late March when the singlet is available for purchase. 

Race Weight

Race day details matter. We kept all of our signatures from the heritage-inspired sash to the BQ insignia. But rather than sewing and flocking these elements on top of the fabric, we employed a technique called sublimation to print them directly on the fabric. It preserves the aesthetic while reducing the weight and chance of chafing.


We launched our first BQ Singlet in 2014 and every year we’ve worked to dial up the technical properties for race day. This year's edition is made from a soft, lightweight mesh, and backed with a more open polyester/elastane blend mesh on the side and back panels for extra breathability in these high sweat zones. 


Boston represents the height of amateur achievement. Every runner who toes the line in Hopkinton is racing for the love of the sport and the roaring crowds on the way into Boston feel and echo those emotions. In its commitment to high standards and the personal pursuit of excellence, Boston is special. As such, every year we introduce a limited-edition collection that celebrates the heritage and significance of this race.

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