Bike Lab.
Your fastest bike set-up for your route.
The speed tables out there are solo rides without draft — a race is a different question. We compute the race: pack aerodynamics, route profile, your watts.
Which race are you riding next?
Set it — or we're picking the bike for some race, not yours.
Running on the reference rider (165 lb · CP 240 W) — enter your numbers and the answer becomes yours. We do not know this route's climbs individually — computed against one assumed climb.
Measurements: Zwift Insider (Eric Schlange) · derived parameters: ZwifterBikes (Thor Gabrielsen) · route data: zwift-data (MIT) · race physics and model: VFWorks. The race figures are computed, not measured — bands show where the model ends.
Zwift is a trademark of Zwift, Inc. — independent project, no affiliation. Bike and wheel brands are named to identify the in-game models; no buying advice for real-world gear.